I want to capture digital signature using mobile devices in Salesforce1 (Mobile App).
I want to store my signature in the system so that I have an option to store my signature electronically in Salesforce1 (Salesforce Mobile App).
There is an AppExchange App which does this Signature Capture App
This is not compatible with Locker Service in Lightning.
Signature Capture is a pure HTML5 native Lightning Component to allow users to draw a signature on a web page associated with a Salesforce record.
This process is repeated until the user is happy the image is an accurate representation of their signature, at which point they click a button to save to Salesforce.