Method of determining an attitude of an eyewear

A method of determining an attitude of an eyewear, the eyewear comprising a first lens comprising a first coating, the first coating having reflection in the non-visible range of wavelengths and comprising a pattern with an orientation, the method comprising:

• detecting a light signal with a digital device comprising a light sensor for the non-visible wavelength range;
• and
• calculating, using the light signal, an attitude of the eyewear,
• wherein the light signal is signal in the non-visible range reflected from the at least first coating when the eyewear is within a sensor range, and
• wherein the attitude is at least one of:
• a yaw angle, a pitch angle, a roll angle,
• wherein the light signal comprises a first signal and a second signal,
• wherein the eyewear is configured to reflect light of the first signal and of the second signal,
• wherein the first signal is reflected by the first coating at a first location of the eyewear, and the second signal is reflected by a second coating at a second location of the eyewear,
• wherein the method comprises determining:
• the yaw angle, which comprises:
• determining, with the first light signal, a first distance between the eyewear to the sensor, determining, with the second light signal, a second distance between the eyewear to the sensor, using the first distance and the second distance to calculate the yaw angle;
• or
• the pitch angle, which comprises:
• determining, with the first light signal, a deviation from a first maximal signal intensity, and using the deviation to calculate the pitch angle;
• or
• the roll angle, which comprises:
• determining, with the first light signal, a first deviation from a first maximal signal intensity, determining, with the second light signal, a second deviation from a second maximal signal intensity, using the first deviation and the second deviation to calculate the roll angle.