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Please recommend any method/best practice which takes unique data from phone, munches it and always produces the same key for given user on his/her device.

dhaval
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  • More explanation needed. – Harry Joy Feb 08 '11 at 10:13
  • case 1 - User downloads a application on android phone , you need to sync up his data to cloud, without user creating a account either on phone or web – dhaval Feb 08 '11 at 10:16
  • case 2 - User makes a payment on web - You want to give him a unique code which when he enters on mobile - his application gets some more goodies – dhaval Feb 08 '11 at 10:16

1 Answers1

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1 You capture IMEI.
2 You can capture Bluetooth UUID
3 You can generate UUID or a random string and can associate it with device logically

jmj
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  • Yes, I need recommendation for for the unique string generation algo/best practice etc., so that it is short and unique, just like url shorteners do with the URL – dhaval Feb 08 '11 at 10:21
  • http://stackoverflow.com/questions/41107/how-to-generate-a-random-alpha-numeric-string-in-java – jmj Feb 08 '11 at 10:23
  • thank you for the link, the requirement is like "Given a IMEI I always get UNIQUE code of length 5" and this code is unique across users – dhaval Feb 08 '11 at 10:32
  • @dhaval You want to take a 15 or 16 digit IMEI and generate a 5 character code that will be guaranteed to be unique for all possible IMEI numbers? – dave.c Feb 08 '11 at 10:59
  • @dave hmm , tuf one, okay IMEI was given as example so that it acts like a seed, when fed to a algorithm, generates a unique 5-7 digit alphanumeric code – dhaval Feb 08 '11 at 15:19