Those rolling number things are similar concept but slightly worse security in my opinion. They are called TOTP. These days very few use a token, most use an app to generate the numbers.
The reason I think they are worse is the secret now lives in that app which is usually running on an always internet connected device. The FIDO USB keys the secret is generated on the key and never leaves the key, the key signs the event.
Bill Cypher /
npub1qy…dmu7u
2025-05-22 10:39:54
in reply to nevent1q…38zg
Author Public Key
npub1qyxlpj2gl6dt2nfvkl4yyrl6pr2hjkycrdh2dr5r42n7ktwn7pdqrdmu7uPublished at
2025-05-22 10:39:54Event JSON
{
"id": "3df954509e8da57a7532a8a6ff3d4a891a01e11ba7c405d11adb445af9c86e99",
"pubkey": "010df0c948fe9ab54d2cb7ea420ffa08d57958981b6ea68e83aaa7eb2dd3f05a",
"created_at": 1747910394,
"kind": 1,
"tags": [
[
"e",
"0023421545183dcf811764c34a7c0b7a113951ad5e835472b8423fe31834f2e2",
"",
"root"
],
[
"e",
"a17a95904d61d70dca8d7de72ab2788a7bdc53dcd61e3ff66c05efe1cf1208f7"
],
[
"e",
"75a3cc37768c671a07f61a73758da53e14a23371cb7c3586cb2e16194a08ca47",
"",
"reply"
],
[
"p",
"010df0c948fe9ab54d2cb7ea420ffa08d57958981b6ea68e83aaa7eb2dd3f05a"
],
[
"p",
"d28413712171c33e117d4bd0930ac05b2c51b30eb3021ef8d4f1233f02c90a2b"
]
],
"content": "Those rolling number things are similar concept but slightly worse security in my opinion. They are called TOTP. These days very few use a token, most use an app to generate the numbers. \n\nThe reason I think they are worse is the secret now lives in that app which is usually running on an always internet connected device. The FIDO USB keys the secret is generated on the key and never leaves the key, the key signs the event. ",
"sig": "d1f6089fa7691cae23630c2ba7817a0819bad83b93f50ff79edd88c6f82a30187c1cc45d1049cf04b3cf5f4493b91ca9108283fffad119cc7df2302a4cfa4704"
}