It goes without saying, but I’ll say it.

Don’t use a digital id, nor a digital social security number or anything like it because a cop may run into something incriminating against your on your phone, something as simple as a notification could be enough.

If you just use a physical card/I’d they can only get that specific information and nothing more without looking to look at other sources.

I will say tho, having a digital id as backup might come in handy if you don’t have the physical cards on you, but be responsible about what notifications and images and other data you have accessible on your phone to them.