I just got these great things called matches, they make lighting fires easier and I haven't needed my flint and steel in weeks. Just recently I tried to use my flint and steel to light a fire and found that I'm not as good at it as I used to be, these matches sure are helpful but they seem to lead to a reliance. It's like an addiction, I'm not sure what I can do except ditch matches entirely.

Not really a problem, the antigens are significantly different and we already use them to diagnose the cancer in the first place. If there was any autoimmune response the implant could be removed and the antibodies would filter out of the body.

What happens when people living next to schools aren't able to make phone calls? What happens when the jammers interfere with every other wireless device in the school, like wifi and the radios they issue to the administration?

Theres a system in the works for a blood type scanner that would only need one drop of your blood. Hospitals and medical workers could use it to prevent transfusion mismatches.