| 摘要 |
The present invention relates to a method of limiting access to a device, said method comprises limiting access to said device according to at least respectively a first and a second level of access, wherein said method comprises the steps of: - receiving a protection key from the rightful user of said device, said protection key comprising a combination of biometric data relating to said rightful user and shareable knowledge data, - limiting access to said device, whereby a first level of access to said device can be obtained when receiving an access key comprising said shareable knowledge data in said protection key, and a second level of access to said device can be obtained, when receiving an access key comprising the combination of said biometric data and said shareable knowledge data in said protection key. Thereby a device being protected by the biometric data of a rightful user may grant additional access rights to the device for people that at least know the shareable knowledge data. The device could be personal devices such as a PDA, MP3 player, laptop, PC, etc. ® KIPO & WIPO 2007
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