Gateway Late Night
An H-Thumb, also just called a “thumb” is a T2 device used in hitchhiking. It is a longwave transceiver. While specific designs vary by manufacturer, a thumb typically appears as a metal or polymer cylinder, three centimeters long by one centimeter in diameter, with an activation button and a receive indicator light.
When activated, an H-Thumb sends out a coded interrogative able to be received by dedicated communications modules on compliant ships. If a ship within range chooses to respond, the module (usually called a “hitchhiker’s module” or “h-mod”) sends a reply letting the H-Thumb’s user know that a ride is inbound.
Most H-Thumbs have an effective range of roughly one million km, depending on local conditions. They are generally capable of broadcasting for two to three days between recharges.