Israel’s Nuvo Group has developed the PregSense monitor for expectant mothers that need to keep a check on their fetus but do not require hospitalization. Sensors on an elastic harness transmit data via bluetooth to a smartphone for storage in the cloud that physicians can access.
http://www.reuters.com/article/2015/06/01/us-israel-mobile-foetus-monitor-idUSKBN0OH2NF20150601