The gadget, which links to a mobile phone app and web interface, has two buttons, one yellow and one blue. The idea is that you press the yellow one if you are feeling happy, and the blue one if you are sad and it allows your employer to track your emotional state. Managers can then view an online dashboard to see how workers are feeling and coping. With bosses no longer able to check in physically with their team, Moodbeam hopes to bridge the gap and companies who wish to monitor the wellbeing of staff who are working from home . At first glance the silicone wristband could be mistaken for one that tracks your heart rate when you are doing exercise. How accurate can the data be ?