Show next number for servers that are too tight with the timing

[rdebath]

A few servers only allow exactly the code for this half minute or you might have an issue that makes copying the number tooo slow. Showing the next number gives some more seconds on poorly implemented servers.

[JKDos]

I have a change proposal that will show the last and next set of numbers. This isn't typical of TOTP generator, so I'm not sure if Jaden wants to publish them or not.

See results here: https://jkdos.com/totp/
On Github: https://github.com/jkdos/totp-generator

[rdebath]

Most generators are phone apps (faps) and yes they only provide the minimum possible, they even seem to be limited to just SHA1. OTOH the Linux command oathtool will give you as many future keys as you want and will also base those keys from any time. It also does counter modes.

[jaden]

That's an interesting idea. I'd prefer to keep the default behavior simple, but perhaps this could be enabled with a checkbox.