Lock picking... motorcycle disk and chain lock..

[RemaL]

Hmmm how good are disc locks..

http://www.youtube.com/watch?v=-zy8sEj8etU

http://www.youtube.com/watch?v=V4QVtcABNv8

I don't have either lock but don't feel so safe now ( If I had a bike now that is)

[Rubin215]

Old fashioned lock barrels with pin-index locks.
No one reliable makes them anymore and Oxford wil exchange your old one for free if it has this type.
The key is circular.