It is capable of erasing the magnetic information on a credit card at a distance halfway to the Moon.
它的磁性可以在离月球一半的距离之外，把信用卡上的磁性扫光。
The information in FRAM is updated after the writing event and before erasing to protect suddenly power off and ensure reliability of the camera.
为保证一体化相机的可靠性，提出了拍摄过程事后更新，删除过程事前更新的策略，以保证突然断电时不影响其它文件。
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