TellSpec is a rechargeable, handheld spectrometer that can analyze the light reflected by foods and beverages to provide information about their ingredients, calorie content, nutrients, and allergens. Chief executive officer and co-founder of year-old, 18-employee startup TellSpec in Toronto Scanning A TellSpec user trains the light beam on a food. The scanner counts the reflected photons and sorts them by wavelength to evaluate the product's chemical components.
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