'Sentiment analysis', a Google Glass app by San Diego-based Emotient, will help read emotions. Emotient says the app might be of great help for retailers to enhance customer service. The app is created to help those who wear the futuristic specs to better understand the people they view through the Glass field.

According to the company's CEO Ken Denman, in an article in PC Mag, they believe the app will have broad applicability, such as in retail business to improve customer experience. It can be a good assistance tool for workers who are not so good at understanding emotional cues.

Emotient's software can gauge the overall sentiment if it is neutral, negative or positive; primary emotions like joy, sadness, surprise, fear, anger, contempt and disgust; as well as advanced emotions like confusion and frustration. The app will report what it believes people feel. The Glass wearer can see the report in his field of vision.

Analysis is anonymously done and not stored. Results, images and videos are not saved as well. Emotient says there is no need to worry about a database saving your emotions.

Amidst concerns of privacy last year, as written in an article in PC Mag, Google said that its Glass would not add the feature of facial recognition to its products, without first establishing strong privacy protections.

Sentiment analysis could have been a big help last month when Glass wearer Sarah Slocum was confronted and assaulted by bar patrons at San Francisco's Molotov bar. The assaulters were concerned that she was recording without permission. Google Glass has since been banned from the bars 'Molotov' and 'The Willows' in San Francisco.