Cryptocurrency faucets are a reward system, in the form of a website or app, that dispenses rewards in the form of a satoshi, which is a hundredth of a millionth BTC, for visitors to claim in exchange for completing a captcha or task as described by the website. There are also faucets that dispense alternative cryptocurrencies.
These faucets have you do menial tasks such as solving captchas, playing games, clicking on ads, or watching videos. For each task you do, you earn a small amount of Bitcoin, Litecoin, Dogecoin, Etherium, Monero, Dashcoin, Bitcoin Cash. ETC