Various switchable devices, e.g., cellular telephones, including inductive antennas are disclosed. These switchable devices may include one or more switches and a biometric sensor. Some of these one or more switches are optionally wireless and/or manual. In various embodiments, the switchable devices include are included within cellular phones, security devices, identity devices, financial devices, remote controls, and the like. The switchable devices are optionally configured to perform financial transactions.