The Topaz Model T-RFS261-C1B/2B/3B canister, along with the Topaz Model L-RFB-100-B base unit, is a complete and versatile signature capture system for use with remote drive-through environments. Topaz canisters can eliminate paper forms by binding electronic signatures to documents or transactions. Information is transferred through a frequency-hopping spread-spectrum 2.4 GHz wireless link, ensuring that data is securely and reliably transmitted between the user and host. The convenient design of the canister features internal pen and document storage, drive-off alert, automatic activation upon opening, and a power saving standby mode. The base unit can be hot-plugged into the computer and need not be connected during the boot process. The active electromagnetic pen is designed for a long life of over 30 million tip activation cycles, and the plastic tip is easily replaceable with no dis-assembly required.