In the fall of 2019, Honghao Deng and his co-founder Jiani Zeng joined 500 Global’s accelerator program, as part of Batch 26. Their company Butlr, an MIT Media Lab spin-out, had developed sensors that anonymously track through body heat how people move indoors, to help businesses manage the use of commercial space. Applications include monitoring foot traffic, maintaining clean bathrooms, or activating air conditioning when needed. Butlr was set on deploying its sensors in commercial building...