Hi there, Judy!
Thank you, first of all, for the kind words; it's our pleasure to help Guests create perfectly magical Disney experiences.
The
PhotoPass+ Card is approximately the size of a credit card, and is made of a rigid plastic material.
Because of the scannable nature of the card, I'd recommend waiting until you have finished using it entirely.
You are welcome, following your trip, to modify the card in any way you like; do ensure, however, that the code on the back is readable so you always have a way to access your family photo memories online.
Have a wonderful trip!
See you later, celebrator,
-Deborah B.