Is it common for US banks to make photocopies of DL?

I am client of a major US bank for many many years. On my last appointment, just asking some basic questions about my account, when I showed my Driver License, the bank employee took it and made a scan of it to their computer. Further he sent that copy via their internal email somewhere.

My question is, I've not ever noticed banks needing to make copies of your ID/passport ever. Of course in the light of many data breaches recently …

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