Many of the Sensory Apps can be controlled via keyboard access and bluetooth or wired switches that output numbers 1,2,3,4,Space,Enter (or ~1,2,3,4). The access details can vary per app, as the functions are different. We also accept that some apps (for example speech therapy or creative art apps) will be used by a teacher with a student, or parent/helper with a child.
An interesting accessibility development is that iOS14 devices, recent Android devices, Windows 10 computers (and of course XBox One), Chromebooks and Apple Macs all now support the bluetooth XBox One gamepad controller and its accessible alternative the Microsoft Adaptive Controller (for switch access). Many of the Sensory apps now support these input devices also, so you will find that the live demo of most some Sensory Apps can be controlled by an XBox Controller.
As of Nov 2020, the current Sensory iOS Apps cannot yet support the XBox Controller, unless the Sensory App is accessed live online using the Safari browser.
See more about the Microsoft Adaptive Controller and a selection of other input accessories and techniques below.