Technology and Play The 46th Symposium of ICOHTEC, the International Committee for the History of Technology, took place in Katowice, Poland, between 22 and 27 July 2019. The main theme of the symposium was “Technology and Powerâ€. Together with Stefan Poser, we organised two sessions on play under the general title “Challenging Power through Playing with Technology”. During the sessions, the following papers were presented and followed by lively discussion: Artful Play with TechnologyDr. Florian Bettel Gaming the Iron Curtain: Alternative and subversive practices in theCzechoslovak computer hobby movementDr. Jaroslav Svelch Spraying – Challenging Activity, Art and Subversive Game in the CityDr. Stefan Poser Alternative mobility: the history of sliding vehicles for wintryroadlessnessDr. Svetlana Usenyuk-Kravchuk Toy Robots: Playing with Humanity’s FearsDr. Artemis Yagou Post navigation Objects and OrganismsArtefacts XXIV in Edinburgh