问题
I wish to develop an app in iPhone in which user's thumb will be scanned first. The impression of the thumb should be used as a signature for email or report. Please suggest if its possible to do or not. If its possible then are there any tutorials or link.
Thanks in advance, Prerna
回答1:
Unfortunately no, iPhone detects touches as points, it's not sensitive enough to detect the human thumb with the fine marks of a thumbprint.
Many have tried, some may even provide code, but ultimately it can't work.
来源：https://stackoverflow.com/questions/5752859/does-iphone-provide-any-api-to-detect-human-thumb-impression