Microsoft could be looking to enter the smartwatch market with a focus on the health and fitness industry, following the publication of a patent originally filed in 2012.

Published this week, the patent relates to a device being designed by Microsoft’s Surface team, which is to include a touch display on its top surface and an optical light sensor underneath.

The position of the sensor will ensure that it comes into contact with the user’s skin, in order to measure a number of fitness and exercise-related data.

When observing the patent, Microsoft also states that a number of issues currently hamper the functionality of wearable tech - such as the potential disturbance caused by constant perspiration onto devices.

To combat this, an idea is being mooted by the company to have a central unit that is detachable from the watch’s wristband.

As well as keeping it away from constant contact with sweat, the device will then be connectable to an external device to potentially transfer stats and metrics.

In combination with the collection of fitness statistics, the patent also makes reference to a number of other smartwatch functions, including an ability to play music, send messages and make phone calls, with GPS also being cited.

Microsoft will be looking to catch up on movements made by rival device producers, including Samsung, which recently made steps to push its Gear smartwatch offering forwards with two updated versions.

Further progress has also been made by sportswear giant Nike, which recently announced the unveiling of its own research and development lab in San Francisco, fuelling rumours of a potential collaboration with Apple.