If you have some user input on pic, you can use that for seed value by measuring time between button press and release. But again RANDOM just use some math and probably after some time repeat result.
For dice I used this code:
Main:
For i = 1 to 6
If button=pressed Then GoSub ShowResult
Next i
GOTO Main
That is closest to random as you can get it. Result depending only on user button press. Variable will change value about 200 000 times in one second, so there is no way to repeat sequence...