WeWork announced today that it will acquire Waltz, a building access and security management startup, for an undisclosed amount. Waltz’s smartphone app and reader allows users to enter different properties with a single credential and will make it easier for WeWork’s enterprise clients, such as GE Healthcare and Microsoft, to manage their employees’ on-demand memberships to WeWork spaces.

WeWork’s announcement said “with deep expertise in mobile access and system integrations, Waltz has the most advanced and sophisticated products to provide that single credential to our members and to help us better connect them with our spaces.” Waltz was founded in 2015 by CEO Matt Kopel and has offices in New York and Montreal. After the acquisition, Waltz will be integrated into WeWork, but maintain its current customer base.

WeWork has been on an acquisition spree over the past year as it evolves from co-working spaces to a software-as-a-service provider. Companies it has bought include office management platforms Teem (for $100 million) and Managed by Q, as well as Euclid, a “spatial analytics platform” that allows companies to analyze the use of workspaces by their employees and participation at meetings and other events.