The minimum requirements are internet access and one computer/tablet/mobile device.
If using eNovativePiano with a group where the users don’t have a personal device a projection system is necessary. Of course, it would be advantageous for each keyboard station to have a computer, laptop, or tablet, so that all the materials could be accessed during class time by each student, allowing for more independent work. But many of our institutional users use eNovativePiano quite successfully with only a teacher computer and a projector.
We also recommend a classroom printer, but this is completely optional.