Just how small can a QR code be? Small enough that it can only be recognized with an electron microscope. A research team at TU Wien, working together with the data storage technology company Cerabyte ...

You don't happen to have a microscopic phone camera yet, do you?

Kit includes a mini microscope, case, lens cloth, instructions and personal fertility chart Offers a lifetime replacement guarantee. Is less expensive than a fertility monitor, and far less than the ...