Versailles and Louvre ID

Hi,
I'm not an EU-resident but have a residency permit and bought a ticket for under-26 in Versailles and Louvre museum. When we show up there, is that necessary to bring the physical card, or just a picture of ID is enough?
I just don't want to bring ID and passport with me due to the pickpocket problem.

Thank you so much in advance for your answer.