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Digital assets and currencies

Understand assets, networks and trading mechanics with sources you can check.

Trading basics

SmarTrip

SmarTrip, alternatively spelled Smart Trip as part of an ongoing 2026 rebrand, is a contactless payment system for public transit in the Washington metropolitan area, managed by the Washington Metropolitan Area Transit Authority. SmarTrip is accepted on the Washington Metro, Metrobus, and local bus services in Northern Virginia.

Trading basics

TAP card

The TAP card (standing for Transit Access Pass) is a contactless smart card used for automated fare collection on most public transport agencies within Los Angeles County, California. The card is also available in electronic form, free of charge, in Apple Wallet and a standalone app on Apple and Android devices, thereby bypassing the need to purchase the plastic USD $2 card. It is admini