There are several methods for online payment verification, each offering a different level of security and convenience.

1. Credit and Debit Cards: This is the most common method of online payment. It requires the user to enter their card details, including the card number, expiration date, and CVV code.
2. Bank Transfers: This method allows users to transfer money directly from their bank account to the online merchant. It is a secure method, but it can take a few days for the transfer to be completed.
3. E-Wallets: Services like PayPal, Apple Pay, and Google Wallet allow users to store their payment information and make transactions with just a click. They offer an additional layer of security as they keep the user's financial data private from the online merchant.
4. Cryptocurrencies: Some online merchants accept cryptocurrencies like Bitcoin for transactions. While this method offers high levels of security and privacy, not all users have access to cryptocurrencies.
5. One-Time Password (OTP): Some banks and financial institutions send an OTP to the user's registered mobile number or email address. The user must enter this OTP to verify the transaction. This method adds an extra layer of security by ensuring only the registered user can complete the transaction.

It's important to choose a method that offers a balance of security and convenience based on your specific needs and comfort level with technology.

Electronic wallets, commonly known as e-wallets, are a type of digital system that stores a user's payment information. They allow users to make electronic transactions, including online purchases and money transfers. E-wallets offer a convenient and secure way to pay for goods and services without sharing your actual financial information with the merchant. Some popular e-wallet services include PayPal, Apple Pay, Google Pay, Venmo, Zelle, and the Cash App.

Here are some trusted and widely used e-wallet services:

1. PayPal: One of the oldest and most trusted e-wallets, PayPal allows users to send and receive money in multiple currencies.
2. Google Pay: This e-wallet is integrated with other Google services, making it convenient for Android users.
3. Apple Pay: This service is exclusively for Apple device users and is integrated with the Apple ecosystem.
4. Venmo: Owned by PayPal, Venmo is popular for its social features that allow users to share and like payments and purchases.
5. Cash App: This service allows users to send, receive, and request money. It also allows users to invest in stocks or Bitcoin.
6. Zelle: Zelle is unique in that it's directly integrated into many bank's mobile apps, allowing users to send and receive money through their own bank.

Please note, while these services are free to use, there may be fees associated with certain transactions, such as sending money internationally or receiving payments for goods and services.