sensor placement for freestyle libre 3

my mom has the freestyle libre 3 so i’m coming to the all knowing reddit people to ask for this. she puts them on the upper part of the back of her arms & they will fall out bc she is directionally challenged & sometimes hits walls or corners causing it to loosen up.

my question is: is there anywhere else she could put this sensor? she would like to be able to put it on her tummy bc she wouldn’t hit it on everything like she does with arms.

i’ve googled it & should probably listen to that as it says only arm. but i was wondering if anyone here has put it anywhere else.