A hand support device for operating an input apparatus, comprising:
- a hand support structure having at least one bar hand support arranged to one or more hands of a user or a prosthetic limb for ergonomic support during input operation;
- at least one sleeve slidably mounted on the bar hand support and including at least one interface sensor configured for detecting contact, pressure, or signal input from the user, the bionic limb, or the prosthetic limb;
- and
- a biological signal acquisition system disposed within the hand support device and configured to receive one or more of an electromyographic (EMG), electroencephalographic (EEG), or electrocorticographic (ECoG) signal.