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'''Downloadable Conditional Access System''' or '''DCAS''' was a proposal advanced by [[CableLabs]] for secure software download of a specific Conditional Access client (computer program) which controls [[digital rights management]] (DRM) into an [[OpenCable Application Platform|OCAP]]-compliant host consumer media device. The [[National Cable & Telecommunications Association]] (NCTA) proposed that DCAS be used as a substitute for physical [[CableCARD]]s, a standard also created by CableLabs for which products began appearing in August 2004 as part of industry compliance to the [[#FCC mandate|FCC mandate]], which in turn is pursuant to the [[Telecommunications Act of 1996]]. DCAS is growing in popularity as a less expensive alternative for CableCARD, with major North American operator deployments from Cablevision<ref>Cisco powers DCAS deployment at Cablevision, https://www.youtube.com/watch?v=DMJg53hy9jM</ref> and Charter.<ref>Charter unveils Worldbox- Cisco key supplier of boxes with downloadable security, http://www.multichannel.com/news/technology/charter-unveils-its-worldbox/386685</ref> DCAS deployments can be expected to grow in the coming years, thanks to favorable regulatory view from the STELA Reauthorization Act of 2014<ref>[[STELA Reauthorization Act of 2014]]</ref> and FCC appointing a Downloadable Security Technical Advisory Committee,<ref>FCC appoints downloadable security advisory committee, http://www.fcc.gov/document/appointment-members-downloadable-security-advisory-committee</ref> and wider support for key ladder (K-LAD) functionality from system-on-chip (SoC) vendors and set-top box manufacturers.
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