iso7816-tlv is used at run time in 20 crates (of which 4 optionally). It is a direct run-time dependency in 5 crates. It's used only as a dev dependency in 4 crates (of which 1 directly).

Depender (with downloads and own rev deps) iso7816-tlv version
380 9 card-backend-pcsc ^0.4
4 openpgp-card-pcsc ^0.4
1 mrtd1 ^0.4
yubikey-management ^0.4
1 winscard ^0.4
3 nfc1 dev ^0.4