Samsung Galaxy NX500 Camera User Manual (en)

Connecting & Transferring > 
Sending photos via email
Changing the email password
In the email menu, you can change the email password. For information 
about entering text, refer to “Entering text“. (p. 156)
In Playback mode, touch 
The camera will automatically attempt to connect to a WLAN via 
the most recently connected AP device.
If the camera has not previously been connected to a WLAN, it will 
search for available AP devices. (p. 153)
Press [f].
Select Change Password.
Enter your current 4-digit password.
Enter a new 4-digit password.
Enter the new password again.
When the pop-up appears, select OK.