With the help of an MAX6816 debouncer from Maxim Integrated to form a single push button power switch. Link here (PDF)
This application note presents a single-pushbutton power-control circuit. The design consists of an ON/OFF control circuit comprised of a push button, debouncer, and flip-flop. This circuit toggles the power output voltage by controlling an LDO.
from Dangerous Prototypes http://ift.tt/2qdiYsy