Communications are made secure the moment they leave the BlackBerry device through encryption.

VOA: special.2010.08.06

Because it's a gel electricity is going to move through the gel because there are ions in it the same way - for the same reason you don't drop an electrical device into the bathtub because charge moves through water that has ions in it.

由于凝胶中存在离子,电流会通过凝胶,同样--,因为同样的原因你不会把电器扔进浴缸里,因为水里也有离子,所以水可以导电

耶鲁公开课 - 生物医学工程探索课程节选

The device is a tiny sensor, implanted through a catheter in the heart's pulmonary artery.

VOA: standard.2010.06.04