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# A computer equipped with signature-recognition software

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Re: A computer equipped with signature-recognition software  [#permalink]

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15 Dec 2013, 06:35
Isn't C very extreme. If we are talking about very skilful forgers, then they may find a way to beat the system by copying the speed and pressure. If the option stated many, then C would be the clear winner.

For E, lets assume a person uses fountain pen for the first time, so the pressure won't be too much. Next time, he uses ball pen, so there will be increase in pressure.
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Re: A computer equipped with signature-recognition software  [#permalink]

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19 May 2015, 22:48
According to me, Option C is proper choice.

Reason :- though we can not rule out possibility that many user will be denied legitimate access,this will be bit weaken side of the argument.

While in this argument author is more concern about being positive as he says " even most forgers can not duplicate all characteristics"
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Re: A computer equipped with signature-recognition software  [#permalink]

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07 Oct 2015, 11:05
In the sentence, most is meant to describe adept, not forgers. Option C states that even the best forger cannot get past such security which I think is totally in line with the passage. Moreover, option E I think goes a little too far mentioning "many" authentic users. A correct option E should have looked like " ... some/few authentic users..."
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Re: A computer equipped with signature-recognition software  [#permalink]

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10 Sep 2016, 22:50
hello
why E is not correct
i thought option C is very bold
it states any hacker cannot hack means no one ,dont gmat prefers general answers than too strong extremities
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Re: A computer equipped with signature-recognition software  [#permalink]

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10 Sep 2016, 23:27
oishik2910 wrote:
hello
why E is not correct
i thought option C is very bold
it states any hacker cannot hack means no one ,dont gmat prefers general answers than too strong extremities

"identifies a personâ€™s signature by analyzing not only the form of the signature but also such characteristics as pen pressure and signing speed." is the key line to answer this question.

We are told that this technique makes use of others things as well while analyzing the signature.

So, if one forges the signature and doesn't know the speed/pressure, it would almost be impossible for that person to dig into the system.

So, C clearly states this idea that only forging signature is not going to help.

E is wrong because it is actually weakening the premise by stating that the technique used by software is not helpful as it has not taken into account the point mentioned in E.

Remember on GMAT, a premise is always a source of truth that cannot be denied.
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Re: A computer equipped with signature-recognition software  [#permalink]

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13 Dec 2016, 10:13
thingZero wrote:
A computer equipped with signature recognition software, which restricts access to a computer to those people whose signatures are on file, identifies a personâ€™s signature by analyzing not only the form of the signature but also such characteristics as pen pressure and signing speed. Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
Which of the following can be logically concluded from the passage above?
(A) The time it takes to record and analyze a signature makes the software impractical for everyday use.
(B) Computers equipped with the software will soon be installed in most banks.
(C) Nobody can gain access to a computer equipped with the software solely by virtue of skill at forging signatures.
(D) Signature-recognition software has taken many years to develop and perfect.
(E) In many cases even authorized users are denied legitimate access to computers equipped with the software.

Type- Inference
Boil it down - Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.

(C) Nobody can gain access to a computer equipped with the software solely by virtue of skill at forging signatures. - Correct - This is a restatement of the premise
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Re: A computer equipped with signature-recognition software  [#permalink]

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20 Mar 2017, 00:06
1
Argument Construction

Situation Forgers cannot duplicate all the characteristics that signature-recognition software analyzes, including the form of a signature, pen pressure, and signing speed. Computers
equipped with this software restrict access to those whose signatures are on file.

Reasoning What conclusion can be reached about computers equipped with this software? The passage states that the software detects more characteristics in a signature than the most accomplished forger can possibly reproduce. Thus, skill at forging signatures is not enough to allow someone to gain access to a computer equipped with the software.

A No information about the speed of the analysis is given, so no such conclusion can be drawn.

B Although the software would likely be of benefit to banks, we cannot conclude that it will be installed in most banks because the passage doesn't rule out, e.g., that the software may be too costly or that there may be proprietary constraints.

C Correct. This statement properly identifies a conclusion that can be drawn from the passage.

D Although it seems reasonable to think that the software took a long time to develop, nothing in the passage justifies the claim that it took years.

E Nothing in the passage rules out the possibility that the software functions so well that authorized users will never be denied legitimate access to computers equipped with the software.

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Re: A computer equipped with signature-recognition software  [#permalink]

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10 Aug 2017, 20:46
When we are talking about identifying a conclusion with the info provided. IMO installing software (option B) in banks seems most relevant. Can anyone help explain the rationale why the option "C" is correct?
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Re: A computer equipped with signature-recognition software  [#permalink]

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10 Aug 2017, 21:33
1
AnubhavK wrote:
When we are talking about identifying a conclusion with the info provided. IMO installing software (option B) in banks seems most relevant. Can anyone help explain the rationale why the option "C" is correct?

Hi AnubhavK ,
Option B seems like a real world inference, but on the GMAT , Inference means a statement that has to be true based on the facts given.

A computer equipped with signature-recognition software, which restricts access to a computer to those people whose signatures are on file, identifies a person’s signature by analyzing not only the form of the signature but also such characteristics as pen pressure and signing speed. Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.

Type - Inference

(A) The time it takes to record and analyze a signature makes the software impractical for everyday use. - Out of scope - While one might think that because the signature recognition software is complex, processing might take some time, but stating that the time taken will make it impractical is a stretch
(B) Computers equipped with the software will soon be installed in most banks. - Out of scope - this need not be true
(C) Nobody can gain access to a computer equipped with the software solely by virtue of skill at forging signatures. - Correct - Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
(D) Signature-recognition software has taken many years to develop and perfect. - Incorrect - although this might seem a reasonable real world inference, we can't be sure
(E) In many cases even authorized users are denied legitimate access to computers equipped with the software. - Out of scope
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Re: A computer equipped with signature-recognition software  [#permalink]

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20 Sep 2017, 04:34
anairamitch1804 wrote:
Argument Construction

Situation Forgers cannot duplicate all the characteristics that signature-recognition software analyzes, including the form of a signature, pen pressure, and signing speed. Computers
equipped with this software restrict access to those whose signatures are on file.

Reasoning What conclusion can be reached about computers equipped with this software? The passage states that the software detects more characteristics in a signature than the most accomplished forger can possibly reproduce. Thus, skill at forging signatures is not enough to allow someone to gain access to a computer equipped with the software.

A No information about the speed of the analysis is given, so no such conclusion can be drawn.

B Although the software would likely be of benefit to banks, we cannot conclude that it will be installed in most banks because the passage doesn't rule out, e.g., that the software may be too costly or that there may be proprietary constraints.

C Correct. This statement properly identifies a conclusion that can be drawn from the passage.

D Although it seems reasonable to think that the software took a long time to develop, nothing in the passage justifies the claim that it took years.

E Nothing in the passage rules out the possibility that the software functions so well that authorized users will never be denied legitimate access to computers equipped with the software.

Seems like Verbal review explanation copy paste
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Re: A computer equipped with signature-recognition software  [#permalink]

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20 Sep 2017, 04:39
For a person to perfectly sign replicating given 3 features => speed , pressure , and design is merely IMPOSSIBLE => but lets assume he manages in some cases => means in many cases original user who is authorised is denied access.
So if anyone can shed light on this reasoning that why E is incorrect . And what is wrong in my reasoning.

Secondly its not written most logically concluded => its written =>Which of the following can be logically concluded from the passage above?
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Re: A computer equipped with signature-recognition software  [#permalink]

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03 Jan 2018, 20:39
Do I have avoid using extreme language words, such as: nobody, some, all of them, ecc. Mostly for these type of questions?
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Re: A computer equipped with signature-recognition software  [#permalink]

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04 Feb 2018, 03:53
GMATNinjaTwo generis GMATNinja VeritasPrepKarishma

In an inference question, usually we avoid EXTREME words
in answer choices since we are looking for a MUST BE TRUE statement.
Argument says: Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
which means 51 - 91 % of adapt forgers cannot duplicate all of the characteristics the program analyzes.

Option C says:
Nobodycan gain access to a computer equipped with the software solely by virtue of skill at forging signatures

How could I infer C from above reasoning?

Can you provide more concrete reasoning to reject (E)
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Re: A computer equipped with signature-recognition software  [#permalink]

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04 Feb 2018, 23:11
1
GMATNinjaTwo generis GMATNinja VeritasPrepKarishma

In an inference question, usually we avoid EXTREME words
in answer choices since we are looking for a MUST BE TRUE statement.
Argument says: Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
which means 51 - 91 % of adapt forgers cannot duplicate all of the characteristics the program analyzes.

Option C says:
Nobodycan gain access to a computer equipped with the software solely by virtue of skill at forging signatures

How could I infer C from above reasoning?

Can you provide more concrete reasoning to reject (E)

"most" is for the degree of skill of forgers.

Even the most adept forgers cannot duplicate all of the characteristics the program analyzes. - means even the best forgers cannot duplicate all characteristics. So just the skill of forging is not enough to get into the system.

Quote:
(E) In many cases even authorized users are denied legitimate access to computers equipped with the software.

The argument doesn't tell this at all. It just talks about forgers not being able to get in. Whether the system is just too sensitive is something we don't know.
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Re: A computer equipped with signature-recognition software  [#permalink]

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05 Feb 2018, 21:41
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GMATNinjaTwo generis GMATNinja VeritasPrepKarishma

In an inference question, usually we avoid EXTREME words
in answer choices since we are looking for a MUST BE TRUE statement.
Argument says: Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
which means 51 - 91 % of adapt forgers cannot duplicate all of the characteristics the program analyzes.

Option C says:
Nobodycan gain access to a computer equipped with the software solely by virtue of skill at forging signatures

How could I infer C from above reasoning?

Can you provide more concrete reasoning to reject (E)

First of all, you don't want to avoid "extreme" language in inference questions. Rather, you need to be careful when analyzing choices with strong language. An answer choice with strong language, as we'll see here, can be perfectly fine if supported by the information in the passage.

Quote:
Argument says: Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
which means 51 - 91 % of adapt forgers cannot duplicate all of the characteristics the program analyzes.

You've interpreted this sentence as, "MOST adept forgers cannot duplicate...". That is not quite what the passage says. The passage says that "EVEN the most-skilled forgers cannot duplicate...". If that's not clear, consider this example:

• "Most talented surgeons make a lot of money." - This is similar to your interpretation above. We are talking about most OF the talented surgeons.
• "Even the most talented surgeons cannot do their jobs without the help of machines." - This is closer to what is said in the passage. The group in question is NOT "talented surgeons"; instead, we are only talking about the most-talented surgeons (a specific subset of the group of talented surgeons--the best of the best).

There are no forgers who are MORE adept than the MOST-adept forgers. So if the MOST-adept forgers cannot duplicate all of the characteristics, then no amount of forgery skill will allow you to duplicate those characteristics.

I hope that helps!
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Re: A computer equipped with signature-recognition software  [#permalink]

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06 Feb 2018, 16:11
andy_gr8 wrote:
Dont you guys think that C is very strong.. "nobody"

E is a lil on the moderate side..where in if a genuine user doesnt gives the same pressure on signatures, he might get rejected..
so E i would choose

Yes, I'm with you. One of the golden rules is to be careful of extremes such as "nobody, always, never, etc." Nobody seems a bit extreme
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Re: A computer equipped with signature-recognition software  [#permalink]

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04 Mar 2018, 23:58
from GMAT itself we have learnt about that 'Nobody' is too extreme. So here, Gmat is making trap by digging chasm in its own rule. Though not a single answer is perfectly right but for every answers we have the reason to eliminate. Really I am bit in a quandary.
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Re: A computer equipped with signature-recognition software  [#permalink]

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28 Mar 2018, 20:29
thingZero wrote:
Official Guide for GMAT Verbal Review, 2nd Edition
Practice Question
Question No.: 19
Page: 122
Difficulty:

A computer equipped with signature-recognition software, which restricts access to a computer to those people whose signatures are on file, identifies a person's signature by analyzing not only the form of the signature but also such characteristics as pen pressure and signing speed. Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.

Which of the following can be logically concluded from the passage above?

(A) The time it takes to record and analyze a signature makes the software impractical for everyday use.
(B) Computers equipped with the software will soon be installed in most banks.
(C) Nobody can gain access to a computer equipped with the software solely by virtue of skill at forging signatures.
(D) Signature-recognition software has taken many years to develop and perfect.
(E) In many cases even authorized users are denied legitimate access to computers equipped with the software.

(A) The time it takes to record and analyze a signature makes the software impractical for everyday use.

(B) Computers equipped with the software will soon be installed in most banks.

(C) Nobody can gain access to a computer equipped with the software solely by virtue of skill at forging signatures.

(D) Signature-recognition software has taken many years to develop and perfect.

(E) In many cases even authorized users are denied legitimate access to computers equipped with the software.

(C) is the only choice that covers the argument.
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Re: A computer equipped with signature-recognition software  [#permalink]

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15 Apr 2018, 03:42
Even though OA is C. I am kind of in an opinion that C is a bit extreme. The last sentence says MOST forgers can not replicate the signature. -> There are some exceptions right!. So, Some people can access through their forgery skills itself.
@abhimanha , GMATNinja Can you please tell me whether my reasoning is right or am missing something.
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Re: A computer equipped with signature-recognition software  [#permalink]

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19 Apr 2018, 09:46
Nightmare007 wrote:
Even though OA is C. I am kind of in an opinion that C is a bit extreme. The last sentence says MOST forgers can not replicate the signature. -> There are some exceptions right!. So, Some people can access through their forgery skills itself.
@abhimanha , GMATNinja Can you please tell me whether my reasoning is right or am missing something.

soumya170293 wrote:
from GMAT itself we have learnt about that 'Nobody' is too extreme. So here, Gmat is making trap by digging chasm in its own rule. Though not a single answer is perfectly right but for every answers we have the reason to eliminate. Really I am bit in a quandary.

Nightmare007 and soumya170293, I believe your questions were specifically addressed in this post.

"Even the most adept forgers..." is not the same as "Most adept forgers..." Also, there is no reason why we cannot have "extreme" language in a correct answer choice.
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