Shabbat innovations

thumb|upright|An eruv pole and wire outside the Tower of David, [[Jerusalem. Only the higher of the two visible wires is used by the eruv.]]

elevator running automatically to satisfy Jewish Sabbath law

250px|right|thumb|A copper blech covers the lit burners on a stovetop, keeping food warm for the Shabbos meal. A blech (from the Yiddish word בלעך () meaning "tin" or "sheet metal", alternatively from Middle High German or Standard German "Blech", meaning tin or sheet metal) is a metal sheet used by many observant Jews to cover stovetop burners (and for some, the cooker's knobs and dials) on Shabbat, as part of the precautions taken to avoid violating the halachic prohibition against cooking on the Sabbath.

feature in home appliances allowing them to be used by Shabbat-observant Jews on the sabbath, overriding usual operation and making it comply with the rules of Halakha