Finally i did a second circuit, which both of the PICs are not related to once each other, but they are a separate operational circuits. Each of then drives the same relay.

As i have told you this a circuits that will be outside on a main door in a small Village, so people that would like to come in, they need to know either the PASSCODE on the Keypad, or to have with them an RFID key.

After a small discussion we had, old people didnt like to carry an RFID key, so they requested if it is possible to have only the keypad.

On the other side, the younger of the family, liked the idea of the rfid, which the only downside it is to take care not to loose it. Ofcourse both will know the main password on the keypad so, for those will have an rfid key, if once does not work, will have the option to use the keypad to access the door.

To be honest, in nowadays, especially in the village, you do not need a super extreme security system. In addition to that, the simplest the better!!!

I understand that to carry an RFID key is the same as to have the real key to open the door. In my next experiment i will try to include a fingerprint sensor, but im waiting to see a good one, because at the moment none is so reliable.

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