Honouring his Mexican heritage and the Latinx community in San Francisco, “TECH-MECHS,” a survey of Rafael Lozano-Hemmer’s interactive installations opens at Gray Area. Featured are lyrical works like Pulse Topology (2021, image), in which 3000 dangling LEDs blink the varying rhythms of visitors’ recorded heartbeats, as well as bleaker perspectives on mortality and self-sovereignty, such as Sway (2016), an upside-down noose that moves from side to side “every time ICE arrests a person, like a metronome.”