We've had needleless immunizations for decades but they're usually only used in places where people are immunized in bulk. Military basic training centers have them. It's a gun-like device with a hose to a machine. It is placed against your shoulder and when the trigger is pulled, the liquid is forced in under pressure. It's a non-portable version of the hypos on Star Trek.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein
