which the cable customer has subscribed, and the television's remote-control will also control the cable channels. Televisions that support CableCARD should be labeled by the manufacturer as "digital cable ready" (DCR). Interactive features such as video on demand rely on the CableCARD Host device being an OpenCable Host Device and have nothing to do with the physical card. This makes the common use of the phrase "CableCARD 2.0" as a requirement for video on demand misleading, since two way services have been provided with the actual cards from the very beginning. Physical CableCARDs The physical CableCARD inserted into the host device is a PC Card type II that handles decryption of video and ensures that only authorized subscribers may view it. This is also known as a "conditional-access module" function. There are two kinds of physical CableCARDs: A "single-stream" CableCARD (S-CARD) can decode a single channel at a time. The S-CARD specification was initially specified in the Host-POD Interface (SCTE 28) and POD Copy Protection System (SCTE 41) standards (often referred to as CableCARD 1.0) set of specifications. A "multi-Stream" CableCARD (M-Card) can decode up to six channels simultaneously. Multi-stream cards were specified in a separate document in 2003. No actual M-Cards were released before the introduction of CableCARD 2.0, which combined and enhanced the CableCARD 1.0 and Multi-Stream standards. M-Cards are backward compatible with current CableCARD devices. In older CableCARD devices that do not support multiple streams, the card appears to be a single stream card. CE companies have long wanted M-Cards for their CableCARD 1.0 host devices in order to compete with devices that use multiple tuners. This is important for products such as Moxi and TiVo CableCARD DVRs, televisions with picture-in-picture and CableCARD-equipped personal computers, which need to record one show while a user is watching another. To enable this without an M-Card, these products would be required to use multiple S-CARDs. CableCARDs with personal computers Existing integrated cable set-top boxes perform four basic functions: Enable receiving and selecting digital and analog cable channels Uniquely identify the customer and authorize the features to which they have subscribed Decode scrambled digital channels and premium programming such as movie channels Provide interactive two-way communications for electronic program guides, pay-per-view, video on demand, or switched video streams New digital televisions and other devices that are labeled DCR (Digital cable ready) contain: Built-in support for receiving digital cable channels (via an