[TYPO3] FE login by URL

[Lasse Guldsborg]

Hi list

Is it possible to FE login by URL?

What I need is this:
mydomain.com?portalid=linkprovidername&userid=mort07&timestamp=10020070&ticket=xdfpr7kfkf4

portalid=linkprovidername  (Where is the link comming from)
userid=mort07  (FE username)
timestamp=10020070  (time of click)
ticket=xdfpr7kfkf4  (MD5 encripted key, based on userid, timestamp and the 
FE password)

Can this be done?

Best regards,
Lasse