Pointâofâsale transactionsâi.e., swiping a card at the time of purchaseâsecurely encrypt the. credit card data. Cards placed on file for future transactions, such as for express checkâout, use. tokens to access card data.
The outermost layer of Earth is the atmosphere. I say the atmosphere is the outermost layer, because it is as much a part of the of our planet as the atmosphere of other planets is a part of their definition.
The outermost layer of the atmosphere is known as the exosphere. This layer protects the planet from solar wind, which exerts force against it and determines its size. The size ranges anywhere from hundreds to thousands of miles above the earthâs surface. Learn more about Atmosphere