The mainstream types of chipless tags are digitally encoded and work at more than one millimetre range, like silicon chips. Their potential markets go beyond the lowest cost-highest volume potential markets because they have other attributes beyond cost.
or red shift. noun, Astronomy. 1. a shift toward longer wavelengths of the spectral lines emitted by a celestial object that is caused by the object moving away from the earth. Compare cosmological redshift, Doppler effect, gravitational redshift. Origin of redshift.
Radial Velocity: the component of velocity along our line of sight (perpendicular to the plane of the sky). We measure this by the doppler shift of spectral lines in the spectra of the stars. /0 = v/c < 0 --> Blueshift: moving toward us. > 0 --> Redshift: moving away from us.