Method of activating a mechanism, and device implementing such a method
US9336414B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/81
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of activating a function such as unlocking a mobile telephone keypad by an instruction sequence {xi, . . . , xn} of a length n given to a user, who validates the sequence to activate the function. The instruction sequence is determined randomly, and for each instruction xi, the method includes: sending an instruction xi to the user; receiving a response yi from the user; analysis for validation of instruction xi; instruction xi is said to be validated when yi is a valid response for xi and the time elapsed between the sending of xi and the receipt of yi is shorter than a set period Δi; if instruction xi is not validated then the function is not activated; sending the next instruction, if any, after validation of xi; activating the function when at least the last instruction sent is validated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.