Generally, live TV streaming services need smart devices to connect to, so they can stream the shows from the internet.
Smart TVs are likely what you'll use, like sets running Apple TV, Amazon Fire TV, Android TV and so on. Most streaming services run on all smart TVs systems, but we'd double check before you subscribe.
Lots of the services work on other internet-connected devices too like streaming sticks, smartphones and tablets, computers and gaming consoles.