Build a custom software for mobile phone on windows base
when you open the program the screen will ask to connect the mobile phone Iphone , android or any IOS the program will read the phone info ( version ,model , imei , etc)
after few second the program will ask to apply Patch YES or NOT if not is press it will say remove the phone if yes is press will say please wait a green bar will start moving to 100% complete the program will save the info of the Phone on a online database and at the end will say Patch apply successful
if the same phone is connected again in the program will read the imei of the phone and compare with online database if the imei exist in the database will say Patch apply successful on this date ( will show date when the phone was connected for first time )
Nothing is doing on the Phone just read the imei and ios version ( The Patch is just a Ilusion for Inventory Purpose )
More info ask
i have to done this type of App already i ahve 2 year Experience in android developments have done more App in android technologies like web services based App , chat App etc..