There's another type of tube strike happening this Friday (7 February), and next Monday (10 February) and Friday (14 February), but nothing like as disruptive as a network walk-out. No: this is a 'revenue strike'.
At 9.30am-11.30am and 6.30pm-8.30pm on these days, RMT members working at tube stations will open the gates, not issue penalty fares and won't check tickets. They also won't sell tickets and will power down ticket machines or not help with their use.
Gates will still have power so your Oyster card will work, and we wouldn't for a moment suggest Pay As You Go users not swipe in. That would of course be fare evasion and we don't know if the Travel Ambassadors who are currently helping out at stations will also be deployed as ticket inspectors. We're just telling you so that you know why the gates are open and none of the machines work. That's all.
Photo by unslugged from the Londonist Flickr pool