Last Saturday, on the very first snowy day in New York, we organized a 14-hour hackathon we named the Battle of the Sensors. After a successful edition in Amsterdam in May, we decided to challenge the hackers of the Big Apple right before TNW New York on Tuesday. We were proud to count our friends at MessageBird as hack battle co-hosts – alongside partner APIs Google Cloud, StdLib, The Things Network New York and MCCI.