Rockbox

The hardware does not allow for a true power on button
lockout. But would it be possible for a “pseudo” power
on button lockout. Here is the way I see it working.
When the feature is turned on, as soon as the firmware
starts (say from the on button getting accidentally
bumped) , it would look for another button being pressed
(say f1) or will require you to press a button within a
short countdown time. Otherwise, the unit will
automatically turn off.

pseudo_poweron_lock()
{
$keylock_btn=f1
if $keylock_btn pressed then
$poweron=true
else
for counter=3 to 1 step -1
print "Power off in $counter seconds. Press
$keylock to abort"
pause 1 second
if $keylock_btn pressed then
$poweron=true