![]() In fact, NFC is an evolution of RFID that offers more advanced features and better security, but the two technologies still share a lot of things in common. The technology behind NFC is very similar to radio-frequency identification (RFID) commonly used in the security cards and keychain fobs that you likely already use to get into your office or gym. Here are some common techniques used: Image pre-processing: The input image is standardized by cropping to the eye region, converting to grayscale, and adjusting brightness/contrast. NFC, which is short for near-field communication, is a technology that allows devices like phones and smartwatches to exchange small bits of data with other devices and read NFC-equipped cards over relatively short distances. Eye color detector apps rely on image processing and machine learning algorithms to analyze pixel color in photos of eyes. However, NFC can do a lot more than just handle mobile payments. If you've ever used Apple Pay, Google Pay, or Samsung Pay, then you've already taken advantage of the NFC feature on your phone. Like many features of your smartphone, it quietly sits in the background until it's needed, but it can also be used to unlock a wide range of cool features that can make your life easier. Don’t worry, though, as the NFC chip in your phone is a passive scanner that does nothing until you hold it within a couple of inches of another NFC device or tag. Whether you realize it or not, your phone's NFC scanner is likely active right now. Nearly all of today’s smartphones and smartwatches are equipped with NFC technology. The best old phones in 2023: 10 smartphones you should still buy How to save your data from Google’s purge of inactive accounts IPhone not holding charge? How to replace an iPhone battery How to use Android Recovery Mode to fix your phone or tablet Google Lens is currently available on most Android smartphones that support the Google Assistant, and you can expect it to be incrementally upgraded with new features as Google adds to its suite. ![]() Its deep learning capabilities mean we should only expect it to get better in the future. While Google Lens is still in its infancy, it shows a lot of promise. Point it at a business card and it will let you save the person as a contact, and fill in all the details on the card for you. Still, we were impressed when it offered up reviews, social media accounts, and business information when we pointed it at the awning for a small store. The company admits the technology works best for identifying books, landmarks, movie posters, album art, and more. You can even use Google Lens on pictures you’ve already taken by tapping the gallery icon in the top right. If it’s too dark, you can tap the light icon in the top left to switch on your device’s flash. ![]()
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