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Devin Martin committed cf26401

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 == Compatability ==
 This plugin supports the TOTP standard and should work with any service that is compliant with [[http://tools.ietf.org/html/rfc6238|RFC 6238]] and uses SHA1 with a step window of 30 and either 6 or 8 digits.
 
+The key must be provided in base32.  If the service doesn't provide the shared secret key in base32 (most do) then it must be converted first.
+
 This plugin is known to work with Google 2 Step Verification and Amazon AWS.
 
 == Installation ==