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Linux-based Operating System running a Dalvik Virtual Machine produced by Google, typically seen in portable devices such as cellphones, e-book readers, tablets, etc. Not to be confused with Androids in the robotics sense.

9 votes
2 answers
4k views

How to make a fingerprint scanner (UART, Serial) for a headphone jack on Android?

Square up reads magnetic stripe cards through headphone jack on both Android and iOS. I want to capture fingerprints on an Android phone. …
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