Yonas Tibebu

  A contactless payment is a wireless financial transaction in which the customer authorizes monetary compensation for a purchase by moving a security token in close proximity to the vendor's point of sale ( PoS ) reader. Popular security tokens for contactless payment include chip-enabled bank cards and smartphone digital wallet apps. Contactless payments may also be referred to as touch-free, tap-and-go or proximity payments. When goods or services are purchased through a contactless payment, the process may then be referred to as a frictionless checkout.   Contactless payments are known for being secure because the customer does not share billing or payment information directly with the vendor. Instead, all communication is encrypted and each purchase is tokenized with a one-time transaction number. Should a wireless transmission be intercepted, the only information the attacker will get is the one-time code that was used to id...

Nanotechnology, also called molecular manufacturing, is a branch of engineering that deals with the design and manufacture of extremely small electronic circuits and mechanical devices built at the molecular level of matter. Nanotech involves using devices that are miniaturized and small enough to be called nanoscale, which is around .1 to 100 nanometres, with a nanometre measuring at one-billionth of a meter. Nanotech plays an integral role in virtual reality tech hardware, communication and power. Nanotechnology plays an integral role in virtual reality tech's hardware, communications and power. It also plays an important role in chip design and the Internet of Things (IoT). Nanotechnology is often discussed together with micro-electromechanical systems (MEMS), which are microscopic devices used to sense, transport or produce a change in an environment. Positional assembly and self-replication are two other concepts associated with nanotechnology.   Positional assemb...