Smartphone text message service to foster hand hygiene compliance in health care workers.BACKGROUND
 We report an intervention using text messages as reminders and feedback to improve hand hygiene adherence.


 Afterward we sent 2 types of text messages, congratulation or encouragement, and we studied the evolution of hand hygiene adherence.



text messages
Eighteen health care workers were monitored during 12 months by a radiofrequency identification system. 
radiofrequency identification system