A bot is a computer program that works automatically to search for different kinds of information on the internet. People seeking vaccinations often have to search several different vaccine provider websites for available appointments. With the demand for vaccines continuing to outweigh supply, people often have to keep checking sites over and over to find an available time. Sometimes the availabilities can disappear before a person has the chance to complete the appointment process. Bots can be used to continuously search provider sites for the latest availabilities. The bots are often overseen by humans, who can then publicize information about the openings on Twitter or through text messages.