O-LevelComputer ScienceAutomated and emerging technologies2210/11 · May/June 2018 · Q96 Marks

A business wants to use a biometric security system to control entry to the office. The system will use a biometric device and a microprocessor.

Explain how the biometric security system will make use of the biometric device and the microprocessor to control entry to the office.[6]

Mark scheme

Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.

[1] Suitable biometric device, such as fingerprint scanner/retina/eye/iris scanner/face recognition/voice recognition/palm scanner // description of use e.g. use fingerprint on device
[1] Sensor (in biometric device) captures/takes data/readings (of user)
[1] Data/readings are converted from analogue to digital (using ADC)
[1] Data/reading sent to the microprocessor
[1] Data/readings compared to stored values/data ...
[1] ... if data/readings match user can enter
[1] ... if data/readings do not match user is declined entry // user asked to try again ...
[1] alert may be sent to security // alarm may sound

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Topic: Automated and emerging technologies, O-Level Computer Science (syllabus 2210). Structured question, 6 marks.
Source: O-Level Computer Science, May/June 2018 Paper 1 Variant 1, question 9.

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