Tourists from more than 60 countries including the US and UK will need to apply for an ETIAS visa waiver prior to entering the EU by the end of 2022.
An EU-wide program designed to strengthen security for those who travel to Europe without a visa is expected to take effect at some point in 2022. The result will be some additional paperwork and a €7 (about 175 crowns) fee for tourists from more than 60 countries including the United States and United Kingdom.
The new program is similar to the ESTA visa waiver system in the United States. It allows border security to assess possible threats or risks associated with visitors who do not need a visa to enter a country before they arrive.
https://www.expats.cz/czech-news/article/non-eu-tourists-heading-to-prague-face-additional-paperwork-and-fee-next-year