Last year I got a Real ID driver's license because DMV offered free "upgrade" for those who had renewed during COVID pandemic, so I have two valid driver's licenses. I suppose I could carry the older one in a Zip Lock bag in my jersey back pocket, but I am more concerned about losing it and identity theft. If a police officer really wants to know my driver's license, I can recite the number from memory. On my iPhone, one can pull up my medical ID or make an emergency call even if the phone is locked