Privacy-Enhancing Technologies (PETs) refer to tools and methods designed to protect user privacy when engaging in transactions. In the context of cryptocurrencies, these technologies help obscure user identities and transaction details.One common approach is the use of anonymity networks, which disguise user IP addresses, making it challenging to link transactions to specific individuals. Another prevalent method involves cryptographic techniques like zero-knowledge proofs, allowing one party to prove possession of information without revealing the information itself.Some cryptocurrencies, such as Monero and Zcash, are built with advanced privacy features by default. These solutions include stealth addresses and ring signatures, which enhance transaction confidentiality and prevent user tracking.Incorporating PETs fosters a more secure environment for users who are concerned about surveillance and data breaches. By using these technologies, individuals can maintain a level of anonymity while participating in transactions, thereby promoting financial privacy.