Ask Slashdot: What Is Missing In Tech Today?

dryriver writes: There is so much tech and gadget news pouring out of the internet every day that one might think "everything tech that is needed already exists". But of course people thought precisely this at various points in human history, and then completely new tools, technologies, processes, designs, devices and innovations came along soon after and changed everything. Sometimes the opposite also happens — tech that was really good for its day and used to exist is suddenly no longer available. Many people miss the very usable Psion palmtop computers with their foldout QWERTY keyboards, touch screen and styluses for example, or would have liked the Commodore Amiga with its innovative custom chips and OS to continue existing and evolving, or would have liked to be able to keep using software like Softimage XSI or Adobe Director that were suddenly discontinued. So here is the question: What tech, in your particular profession, industry, personal area of interest or scientific or academic field is currently "missing"? This can be tech that is needed but does not exist yet, whether hardware or software or some kind of mechanical device or some kind of process. Or tech that was available in the past, but was EOL'd or "End Of Lifed" and never came back in an updated or evolved form. Bonus question: If what you feel is "missing" could quite feasibly be engineered, produced and sold today at a profit, what do you think is the reason it isn't available?