The purpose of this study is to determine if Radio Frequency Identification (RFID) can lead to greater prosthesis function and control. Subjects are asked to perform specific tasks and actions using the traditional control method, as well as RFID control.

Inclusion Criteria:

1. Age 18 or greater.
2. Below elbow amputation, unilateral or bilateral.
3. Chronic stable amputation: > 6 months from amputation.
4. Stable prosthesis prescription: > 3 months since last major prosthesis modification.
5. Cognitively intact, as determined by Mini-Mental Status Examination score > 24.
6. Able to provide informed consent and available to participate in study activities.
7. No severe residual limb motor/sensory impairment or pain likely to interfere with treatment.
8. Expected to be medically and psychiatrically stable for study duration.

Exclusion Criteria:

1. Patients with diseases which weaken and/or adversely affect the control of skeletal muscle.
2. Patients with poor skin integrity.