Password for what? I think you need to be a bit more specific.
- Password to get into TamaTown? Select the Connect icon (the fifth one) and choose ''PC''. Go onto https://www.tamatown.com/, and click on V4. Enter the details (being careful, double checking is a good idea) and you can access TamaTown! When you recieve enough points/prizes, make sure you click ''Logout''. You will get a code which you have to enter into your tamagotchi (make sure it's still displaying the entry code, and press A), also very carefully, and other codes for the items you bought.
I think your confused, you see... there isnt a password for your tamagotchi, like, to get in. this password area is to get items from tamatown. when you go to tamatown.com you enter with your v4 or v3 and get items, and each item has a password so it can be put on a tamagotchi.
I HOPE THIS HELPED. IF THIS IS NOT WHAT YOU MEAN PM ME.