pls guide me to make multiuser keypad..!!
and also for change code any time
it is with keypad.h library..!!
every suggestions are welcomed
Start by obtaining an Arduino & Keypad, write a sketch that can read your presses and make that work.
Then figure out how to write that to EEPROM to save it.
Then figure out how to enter a new one, compare it to EEPROM, and let something happen if they match.
If they match, allow the user to enter & save a new one.
and then stop using meaningless polls to attract attention to your post, in here it usually results in less attention.......
I agree with MikMo, a poll is not appropriate. If you want help, just post the thread. I might have something (hardware and software) for you that you need. I'll update this reply after I get home.