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Don’t ever hand your phone to the cops
(www.theverge.com)
This is a most excellent place for technology news and articles.
I'm also from Brazil. I chose to refuse any digital IDs: for example, my CNH (for non-brazilians: it's our driver's license) is physical and I used a dumbphone (Multilaser Zapp) to justify to the bureau that I can't have apps for digital IDs (I kinda could within my other device, a smartphone, but I lied having only Multilaser as device). They can't force people to have digital IDs, yet. Not everyone has a smartphone, it's common in Brazil for a house/family/community to have multiple people using one single smartphone, digital IDs won't be usable for this situation. It's not my situation, I avoid to take my smartphone outside of home due to security concerns, so I take a dumbphone instead.
Digital IDs have multiple problems. What if the smartphone breaks? What if the smartphone has no battery when one needs to show one's IDs? These were the factors that motivated me to refuse any digital IDs.