Obscuring an accelerometer signal
First Claim
1. A computer-implemented method comprising:
- determining, at a mobile device, whether a user has been prompted to provide sensitive input data to the mobile device using an input device of the mobile device;
when the user has been prompted to provide sensitive input data to the mobile device, beginning, at the mobile device, to obscure a portion of an accelerometer signal output from an accelerometer of the mobile device;
and receiving, at the input device, the sensitive input data from the user while the portion of the accelerometer signal is obscured.
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Accused Products
Abstract
The present disclosure presents techniques for determining when to obscure an accelerometer signal from an accelerometer of a mobile device. The techniques include determining whether a user has been prompted to provide sensitive input data to the mobile device using an input device of the mobile device. When the user has been prompted to provide sensitive input data, the technique includes obscuring a portion of an accelerometer signal outputted from an accelerometer, and receiving the sensitive input data from the user at the input device while the accelerometer signal is obscured. In some embodiments, the accelerometer signal can be obscured by (i) switching the accelerometer 216 off, (ii) inserting a random noise signal into the accelerometer signal, (iii) masking the low-order bits of the accelerometer signal, (iv) passing the accelerometer signal through a filter, (v) actuating a vibrator of the mobile device, and/or (vi) otherwise degrading the accelerometer signal.
51 Citations
20 Claims
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1. A computer-implemented method comprising:
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determining, at a mobile device, whether a user has been prompted to provide sensitive input data to the mobile device using an input device of the mobile device; when the user has been prompted to provide sensitive input data to the mobile device, beginning, at the mobile device, to obscure a portion of an accelerometer signal output from an accelerometer of the mobile device; and receiving, at the input device, the sensitive input data from the user while the portion of the accelerometer signal is obscured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile device comprising:
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an input device having a physical interface configured to receive input data from a user; an accelerometer module that outputs an accelerometer signal; and a processor in communication with the input device and the accelerometer module and configured to determine whether the user has been prompted to provide sensitive input data to the mobile device using the input device, and when the user has been prompted to provide the sensitive input data to the mobile device, to begin obscuring of a portion of an accelerometer signal for a period during which the user is providing the sensitive input data. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification