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how to make a finger scanner ? Answered

I wanna  build a system for starting a bike  using finger print, my question is how to make a finger print scanner

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Fingerprint scanners are somewhat complicated devices; if that's really what you want, I'd suggest buying the scanner and just building the circuitry and mounting framework needed to hook it into the bike.

But I'm not convinced this is a good application for that technology. Fingerprint scanners and weather/dust are not a great combination. Yes, I know, there are systems which do exactly this, but...

I wouldn't make that my only access to the starter. My luck with finger scanners has been that they only recognize my print about half the time.

im thinking that how to build a system for that so that it is very safe know. would you think that this idea works