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So, this Android app lets you do a fingerprint unlock with your smartphone's rear cam

Posted: , by Luis D.

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So, this Android app lets you do a fingerprint unlock with your smartphone's rear cam
Is it the case that your smartphone lacks a fingerprint sensor, but you really wished to have one, either for serious use or just messing around in general? What do you know, it's possible! Try Finger Print App Unlock, an app that actually does what has long been considered a tired joke in the Google Play kingdom. It uses your smartphone's rear camera to get a good up-close snapshot of your fingers' unique patterns, and then lets you use that to lock specific apps.

The application is extremely easy to use. Upon first launch, the user is being walked through the fingerprint scanning ordeal. One can choose which digit to scan (any of your left or right hand's five fingers), and then it becomes a question of placing said digit in front of the rear camera and snapping a bunch of macro photos. The app then extracts actual fingerprint readings from these images, learns them, and becomes impressively consistent at recognizing finger patterns from them.

Most surprisingly, the app works well enough, although the practicality of this fingerprint unlocking method is unquestionably low, and the issue of protecting those hi-res fingerprint images stored on your device hasn't been elaborated upon by the developer. Thus, we'd like to think of the application as more of a proof of concept, rather than an actual fingerprint unlock solution. However, FPAU does support passcode and pattern unlock methods, so it can double as a perfectly fine app locker while pulling off its fingerprint scanning shtick.

Finger Print App Unlock is free, although there's a paid version ($1.99) available to those wishing to support the developer.

Developer: SUXDDownload: Free / Paid
Category: SecurityPrice: Free (with in-app purchases)

22 Comments
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posted on 07 Sep 2015, 08:34 2

1. phonegeek1212 (Posts: 52; Member since: 14 Aug 2015)


thats cool!!

posted on 07 Sep 2015, 11:19

11. sgodsell (Posts: 3619; Member since: 16 Mar 2013)


It is pretty cool. However Android also offers other methods that are faster, like smart lock. You don't need to use your finger. Just be in the proximity of the device to keep it unlocked. You can use a Bluetooth headset, smart watch, or other device you trust. There is also NFC tags that can be used to unlock your device.

posted on 07 Sep 2015, 12:05

13. Beto_Lopez (Posts: 44; Member since: 14 Apr 2015)


the problem is that if the device is in the range of a trusted device, it remains unlocked, let me make an example: you have problems with a coworker, you have your phone paired with your laptop or desktop as a trusted device, then you go for water and leave your phone in the desk. This person grabs it and Ta-Da is unlocked and make something bad with it. thats why i dont use trusted devices

posted on 07 Sep 2015, 19:24

21. sgodsell (Posts: 3619; Member since: 16 Mar 2013)


When click the power button. Then you can click on the screen once to lock the device, and will be forced to unlock it using your password.

posted on 07 Sep 2015, 08:37 1

2. SamDH1 (Posts: 419; Member since: 21 Apr 2015)


I'm surprised how well this actually works :p

posted on 07 Sep 2015, 12:13

16. jacksparao (Posts: 5; Member since: 26 May 2012)


We use Image processing..

posted on 07 Sep 2015, 08:46 1

3. Zack_2014 (Posts: 378; Member since: 25 Mar 2014)


Has anyone tried it yet?

posted on 07 Sep 2015, 09:18 2

4. arch_angel (Posts: 1651; Member since: 20 Feb 2015)


I Thought This Would Happen. Cause You Can Take Your Heart Rate Though The Camera As Well.

posted on 07 Sep 2015, 10:06 2

5. Ghost04 (Posts: 335; Member since: 03 May 2014)


Just tried .
Not bad .
But takes a long time .
I need to further test its accuracy .
But primarily it's working .

posted on 07 Sep 2015, 10:32 1

6. Beto_Lopez (Posts: 44; Member since: 14 Apr 2015)


is there any way to unlock the device with this?

posted on 07 Sep 2015, 10:42 1

7. UglyFrank (Posts: 1649; Member since: 23 Jan 2014)


It works and it looks nice

posted on 07 Sep 2015, 11:02

8. Zack_2014 (Posts: 378; Member since: 25 Mar 2014)


Not working on my Galaxy S6, takes way to long to complete the fingerprint setup and when the setup is done then it gets stuck at verification image.

posted on 07 Sep 2015, 12:11 5

14. luis.d (Posts: 329; Member since: 04 Dec 2013)


Then again, you are on a GS6 :P

posted on 07 Sep 2015, 12:14

17. jacksparao (Posts: 5; Member since: 26 May 2012)


Can you tell me what is the issue are you facing... write me @ jacksparao@gmail.com

posted on 07 Sep 2015, 14:29

20. MrElectrifyer (Posts: 2928; Member since: 21 Oct 2014)


Could you make the paid version available on the Amazon App Store? Fukn google is demanding I hand over my driver's license and bank statements simply to make a purchase with my $25 gift card credit. Never gonna happen and it's only blocking great devs like you from receiving an income, doesn't stop me from pirating.

posted on 07 Sep 2015, 11:02 4

9. vitormv (Posts: 3; Member since: 15 Jan 2011)


Good luck giving your precious fingerprints to some unkown 3rd party developer that we know nothing about.

posted on 07 Sep 2015, 12:02 1

12. Beto_Lopez (Posts: 44; Member since: 14 Apr 2015)


that's why you block any internet connection to this app with droidwall before use it, anyway it doesnt need internet connection to work

posted on 07 Sep 2015, 14:17 1

18. MrElectrifyer (Posts: 2928; Member since: 21 Oct 2014)


XPrivacy blocking all it's internet access on my OnePlus One...

posted on 07 Sep 2015, 11:03

10. Zack_2014 (Posts: 378; Member since: 25 Mar 2014)


I know it might sound stupid trying it on a Galaxy S6 haha, but I was just curious to try how this app works.

posted on 07 Sep 2015, 12:12

15. jacksparao (Posts: 5; Member since: 26 May 2012)


I'm Jacksparao, Developer fo the application.. Any question you can ask me.. reach me @ jacksparao@gmail.com

posted on 07 Sep 2015, 14:21

19. MrElectrifyer (Posts: 2928; Member since: 21 Oct 2014)


Now this is yet another example of what I love about Android's versatility and flexibility! Now if this integrates properly with the fingerprint API in Android Marshmallow, there'll literally be no reason to buy a phone for the fingerprint functionality...

posted on 08 Sep 2015, 06:03

22. jacksparao (Posts: 5; Member since: 26 May 2012)


Android Marshmallow support by default it will be added by next week..

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