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Capturing Signatures on iOS

DZone's Guide to

Capturing Signatures on iOS

· Mobile Zone
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This is a nifty little piece to bookmark just in case you ever need to do any nice smooth line capturing:

Capture a Signature on iOS

The Square Engineering Blog has a great article on Smoother Signatures for Android, but I didn’t find anything specifically about iOS. So, what is the best way to capture a users signature on an iOS device?

Although I didn’t find any articles on signature capture, there are good implementations on the App Store. My target user experience was the iPad application Paper by 53, a drawing application with beautiful and responsive brushes.

All code is available in the Github repository: SignatureDemo

… Here is an example of the final output using quadratic bézier curves, and velocity based stroke thickness creating a visually appealing and natural signature.

687474703a2f2f7777772e6e656172696e66696e6974792e636f6d2f626c6f67732f6a61736f6e5f6861727769672f6173736574732f7369676e61747572652d6c65747465722d6a2d6f70656e676c2e706e67.png

Handy if you ever need it!

h/t: ManiacDev!

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Published at DZone with permission of Alex Curylo, DZone MVB. See the original article here.

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