How to Steal Cars - A Practical Attack on KeeLoq R

A packaging method and a package for bulk containment of lop-sided articles such as blister carded or similarly packaged items in a space saving nested arrangement are described. A tray, such as a display tray, containing the blister carded items, has retaining means such as a tray wrapper to prevent unintended spillage of the blister carded items but which permits nesting of the blister cards contained within two closely juxtaposed trays whereby efficient nesting of the packed items is obtained in a readily handled package having structurally retentive properties.

[1]  Andrey Bogdanov Cryptanalysis of the KeeLoq block cipher , 2007, IACR Cryptol. ePrint Arch..