1
I forgot my password.
To sign this, point to yourself for 'I', sign 'FORGET' by wiping your hand across your forehead, sign 'MY', and then sign 'PASSWORD' by tapping your 'A' handshape against your lips twice.
2
What is the wifi password?
First, fingerspell W-I-F-I. Then, sign 'PASSWORD'. Finally, sign 'WHAT' with your hands open, making sure to furrow your eyebrows to show you are asking a 'wh-' question.
3
Please type your password.
Sign 'PLEASE' by rubbing an open hand in a circle on your chest. Then sign 'TYPE' by wiggling your fingers as if on a keyboard, 'YOUR', and finally 'PASSWORD'.