You’ll quickly amass a decent amount of Residual and Fading Signals in Zenless Zone Zero (ZZZ), but what should you buy with them? Let me explain how the currencies work and what their best uses are.How to get Residual Signals and Fading Signals in Zenless Zone ZeroResidual and Fading Signals are among the many currencies in Zenless Zone Zero. You will earn both types of Signals by using the Signal Search. Both currencies are tied to the Gacha system, so they are pretty rare unless you spend real money.Screenshot: PC InvasionIf you want to spend your Signals, go to the Signal Shop tab in the store and scroll across to the appropriate page. You can also exchange Polychromes for Encrypted and Master Tapes here, although the conversion happens automatically when you use Signal Search.What is the best way to spend Residual and Fading Signals in ZZZ?If you’re like me and always hunting for your next pull, the Encrypted and Master Tapes are an attractive o…