T cell photos make data encryption truly random - Futurity

There could be a new way to encrypt data in the future. Using one's tcells, there could be encryption that is unbreakable, regardless of how fast computers get.
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There could be a new way to encrypt data in the future. Using one's tcells, there could be encryption that is unbreakable, regardless of how fast computers get.
That's exciting new technology, which could be really useful in the future. I couldn't understand though how will these T cells be taken and photographed - they are in the blood as far as I know. Would we need to donate blood to create a crypto key? In that case we will be truly blood bound to our digital lives