Webcam knows how to snub shoulder surfers


IN CROWDED cafes and on public transport, it’s easy for people to eyeball the info on your laptop or smartphone screen. Now Sony Ericsson is patenting an answer. Some privacy settings already let you hit a button to blank your screen when you sense a shoulder surfer is lurking. But we are often too engrossed in our work to notice such interlopers, say inventors Martin Ek and Bo Larsson. As many netbooks and laptops now have webcams, and some smartphones have front-facing cameras,
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