Laser injection which has been proven to be less painful than the traditional needles have developed in South Korea and there are high chances it might replace the traditional needles.
(http://news.bbcimg.co.uk/media/images/62895000/jpg/_62895369_r108uqbu.jpg)
image: bbc
The laser, called erbium-doped yttrium aluminium garnet, or Er:YAG, propels a stream of medicine with the right force to almost painlessly enter the skin. The jet is slightly larger than the width of a human hair and can reach the speed of 30m (100ft) per second.
The impacting jet pressure is higher than the skin tensile strength and thus causes the jet to smoothly penetrate into the targeted depth underneath the skin, without any splashback of the drug as stated by Prof Jack Yoh of Seoul National.University
It is true some people are not comfortable with sharp objects and many avoid going to hospitals because they just can't take injections. Well, when the cheap injectors for clinical use are ready, these people will have a reason to freely go to hospital and get treatment.
Laser is already used in aesthetic skin treatments.
ref: bbc
Wow! Im impressed, technology at its best in positive use. Bravo!