WeChat has extended its features with the introduction of a digital wallet service. Like a physical wallet, you can securely store your bank cards and make instant cash payments within WeChat with the new feature. With WeChat Wallet, people can electronically send cash to friends and family, just like handing cash to a friend to get you lunch or pay for coffee or a drink at the bar. Information of up to three chip and PIN debit or credit cards, which are verified by Visa and MasterCard security systems, can be saved in the WeChat Wallet. Cards can also be used to Cash In and increase your wallet’s cash balance, pay for services on WeChat such as airtime, electricity, food, or pay SnapScan merchants.
Light at night is bad for your health, and exposure to blue light emitted by electronics and energy-efficient lightbulbs may be especially so. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative) darkness. Now, in much of the world, evenings are illuminated, and we take our easy access to all those lumens pretty much for granted. But we may be paying a price for basking in all that light. At night, light throws the body’s biological clock—the circadian rhythm—out of whack. Sleep suffers. Worse, research shows that it may contribute to the causation of cancer, diabetes, heart disease, and obesity.
But not all colors of light have the same effect. Blue wavelengths—which are beneficial during daylight hours because they boost attention, reaction times, and mood—seem to be the most disruptive at night. And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown.
SleepSpec was developed by Dr Robert Daniel, a Specialist Ophthalmologist who also has training in Human Physiology and Neuroscience. After being kept awake for countless nights by a partner who was unable to sleep, he was motivated to research the human sleep control system. By combining the understanding of normal human Neurophysiology with the knowledge of how the eye processes light, he discovered the natural switching process for sleep and waking.