Quote from Hal in Reese Joins the Army: Part 1
Malcolm: So, I put the base station in there with a portable power supply. I modulated a standard cell phone to mimic the analog modem. Just make sure you stay within 30 feet of this backpack. Hal: Don't worry. I've got the ankle bracelet completely camouflaged. [Hal is wearing white, flared jeans from the '70s] Hal: Can you believe your mom wanted to give these to the blind? Francis: Remember, you have to be back by 4:00. That's when Mom gets home. Hal: And you understand how important it is to keep this from her, don't you? [Francis nods] Francis, you're in charge of making sure Malcolm doesn't betray me, like he's prone to do. Francis: Absolutely.