Signature verification
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The document discusses using handwritten signature verification as an additional security measure for computer systems. It notes that signature verification must be cheap, reliable, and unobtrusive. It explains that online signature verification analyzes dynamic features of signing, like speed and pressure, which presents challenges in differentiating consistent versus varying behavioral elements of a person's signature over time. The document outlines the signature acquisition and identification process using global features and training models, and notes the benefits of low error rates, ability to detect forgery even with copied signatures, fast training, and cheap storage requirements.
Signature verification
- 2. Computers are largely used in almost each and every field including financial transactions, thus providing additional security measures for computer system is necessary. The security measures to be used must be cheap, reliable and un-intrusive to the authorized person. The technique which meets these requirements is handwritten signature verification.
- 3. Everyday transaction Individuals less likely to object Individual’s signature is unique Less controversial
- 4. Offline Signature Verification deals with shape only Online signature Verification deals with dynamic features like speed, pen pressure, directions, stroke length, and when the pen is lifted from the paper
- 5. The main challenge with online Signature Identification technology is differentiating between the consistent parts of the signature and the behavioral parts of the signature that vary with each signing . A person’s signature is never entirely the same. The signature can vary substantially over an individual’s lifetime. Allowing for these variations while providing protection against forgers is a challenging task.
- 6. Signature Acquisition Signature Identification using global features average pressure pen tilt average velocity Number of pen ups Training
- 8. Low error rate. Forgery is detected even when the forger has managed to get a copy of the authentic signature. Fast and simple training. Cheap hardware. Little storage requirements.