App::iTan::Command::Get - Fetches selected iTAN
itan get [--next] OR [--index INDEX [--lowerinactive]] [--memo MEMO]
Fetches an iTan an marks it as used. If possible the iTAN is also copied to the clipboard.
You will be prompted a password to decrypt the selected iTan.
Get the next available iTAN
iTAN index number that should be fetched
Mark all iTANs with a lower index as invalid (only in combination with --index)
Optional memo on iTAN usage