*Sees tech magic* 
So, technological devices can ca at spells.  in that case, would a programmer be able to make an app the does rituals and accepts sacrifices that are set in the program, then touch the phone? Or in the case if Hades work through microtransactions or bitcoin?

I was thinking of a making a witch that worked some ancient magical traditions into a video game, and accidently made stuff really happen, so he moved it to it's own app.  Of course, anyone who isn't him downloads a slightly different version where the actual effect is blocked in program, so no one thinks anything of him having it on his phone.

Basically, he'd just study all if the forms, but would be a weak caster.

Also, would Zeus or Hephaestus accept electricity as a sacrifice?