| 摘要 |
Methods and systems that allow a user to receive location-based services for user selected businesses while maintaining the privacy of his/her location when not in the vicinity of a user selected business. A user designates selected businesses to the LBS provider. The user's mobile device sends its location, in encrypted form, to the LBS provider. The LBS provider performs a computation on the encrypted location and returns an encrypted result to the user's mobile device. The user's mobile device decrypts the result and determines whether the user is near any selected businesses based on the decrypted result. Only if the decrypted result indicates the user is near an approved location will the users mobile device return its location, in an unencrypted form, to the LBS provider. Thus, the LBS provider will only know the user's location if and only if the use is near a business selected by the user. |
| 主权项 |
1. A method for a providing a location based service to a user operating a mobile device, the method comprising:
receiving, by a server, a current location of the mobile device in encrypted form; processing, by the server, the current location of the mobile device in encrypted form, the processing utilizing at least one previously designated user approved location, for which the user desires to receive a location based service, that is stored in a database accessible by the server, to produce a result without having to decrypt the current location of the mobile device; sending, by the server, the result to the mobile device for processing by the mobile device; receiving, by the server, the current location of the mobile device from the mobile device in unencrypted form only when the mobile device determines that its current location is near a user approved location based on the result returned to the mobile device; and using the current location of the mobile device to provide a location based service to the user operating the mobile device. |
