Google announced a $100,000 developers’ challenge prize on Wednesday, the second day of its Project Ara modular phone developers’ conference. The top two runners-up will get all-expenses paid trips for two or three people to the next Ara devcon — there will be a few more held this year — and guaranteed hardware for the project, said Project Ara lead Paul Eremenko. Judging will be based on both objective and subjective criteria. The challenge will be unveiled officially in mid-May, with a detailed set of rules, Eremenko said.
