Three years later the strides taken by the Hong Kong team are far more significant, showing that not only text but also images, music, and video can be stored within cells. The team devised a means of compressing data into chunks that can be placed in different cells and mapped so that it can be easily located later, much as CPUs chop and store data in fragments. They've even developed a three-tier security system that allows them to encrypt the data in an unhackable way, making data stored on their bacterial systems impervious to cyber threats.