save it anywhere
for me i saved it as filename in my desktop like this :
all i have to is to click on the icon and press "F2" then CTRL+C for easy access
it is an amazing trick that i use
don't worry if anybody knowed about it, you can share it to recieve payments
but if you talking about identifier you should save it on very secure place (or write it on a paper) and
never share it with anyone