One of the scariest things about visiting a doctor while you're sick is that you never know when you’ll be given an injection. Sometimes even the smallest of illnesses are met with a hypodermic needle—unfortunately when you least expect it. Luckily for all of us needle-fearing folk out there, MIT researchers have taken the time to engineer the needleless needle.
By taking the needle out of injections, fewer pin-prick illnesses in hospital employees will be happening, and more self-medicating individuals will be able to inject themselves at home without needing to prep and use the needle (eliminating the problem of compliance with home medicators). The beauty of the device comes in the adjustability of the magnetic field, however, as different individuals have different densities of skin.