One of my banks does this, paper TAN is more confident for me as i dont have to carry a additional device and worry about driver support. But i surely will change to that as soon paper tan is over.

The other bank only offers different phone based solutions. Clearly my fault for not checking first, and also not a issue for me as i dont actually access that account.

If i could use that with other websites, Twitter, Github, whatever, i would happily carry that device with me :)