Electronic primers are a thing that already exists commercially. In the early 2000s, Remington sold electronically primed hunting rifles next to their non-electronic equivalent (see: "EtronX").
It is a mature technology. The main issue is cost and simplicity, since it often requires adding electronics to weapons that normally would not require them. The military uses electronically primed cartridges for things like chain guns and autocannons, since those require electronics to fire regardless of how it is primed.
yes ive seen them they are called exotic by most people around me.
yes the very nature of a chain cannon, makes electronic priming,the easier way to go.
so far we can still go to the store with 20$ and come back with a 200pk of 209s, someday that might be not so easy, and electronic is the better/only way.