英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊
借助光栅原理，让屏幕发出的光只能从正面特定角度范围内看到，从而实现「大角度防窥」的效果：，更多细节参见51吃瓜
"Launching radioactive material through the Earth's atmosphere brings safety concerns. You have to have a special license to do that, but it is not insurmountable," says Dr Simeon Barber, planetary science specialist at the Open University.，更多细节参见搜狗输入法下载
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