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A computer equipped with signature-recognition software

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

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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.
[Reveal] Spoiler: OA

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Last edited by dentobizz on 21 Oct 2013, 22:27, edited 2 times in total.
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Re: cr-signature [#permalink]

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New post 19 Mar 2012, 18:37
I have picked the answer C for this question:

From the passage, there are 3 things that the software looks to identify an authentic signature:
1. Form of the signature
2. Pen Pressure
3. Signing Speed

Since the question stem is a MUST BE TRUE question, we can always look back at the passage to clarify our answer choice. I didn't even both prephrasing because there are too many possibilities - in this case I jumped straight into the answer choices.

A. Nowhere in the passage do we talk about the software being impractical for use.

The structure of the argument is:
1. Describes how the software identifies signature
2. Explains how forgers can't duplicate all characteristics to gain access

So, it is clear that this answer choice incorrect.

B. Where do we mention installation of software in most banks? Yea, I thought so...definitely incorrect.

C. This answer choice is correct because it describes how forgers cannot obtain access simply by copying "The form of the signature." In order to get access, you need all 3 components: form, speed and pen pressure.

D. Nowhere do we mention the time it took to develop this software. Incorrect.

E. Although this answer may look correct, there are a few things to mention here:

1. The first 3 words "In many cases," sounds to me like most of the time, authorized users are denied access. This wording is quite strong and I cannot find it anywhere in the passage where users are denied access "in many cases."

2. From the passage, can we even prove that users are ever denied access? There is nothing suggesting that they are ever denied access - this software could be perfect.

Therefore, answer choice E may or may not be true. So, this answer is incorrect.
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Re: A computer equipped with signature-recognition software [#permalink]

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New post 15 Dec 2013, 07:35
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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New post 20 Mar 2017, 01:06
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.

The correct answer is C.
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Re: A computer equipped with signature-recognition software   [#permalink] 20 Mar 2017, 01:06
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