The issue of payment security is one of the basic ones for players. This is due to the ban on gambling, particularly in Russia, but also in many other countries. Providers, registering where business is allowed (for example, in Malta), try to simultaneously provide comfortable, safe, and reliable methods to deposit and withdraw money from the account. This is an area that continues to grow strongly.
Integrated mobile apps
Some countries block the ability to transfer money directly to an online casino. When you try, an error will come out, as well as a warning from the bank. Up to complete blocking of the account - you will have to go and solve the problem in the office.To avoid such difficulties, some providers integrate special third-party mobile applications that look "neutral" and "innocent". An example is Brite, which is used in some countries.
True, now there are problems with some of these programs on the territory of Russia. The most accessible remains QIWI. This application supports most online services for betting and games but is not a bank.

Cryptocurrency integration
Without a doubt, in 2023, this is the safest and most secure way to do it. Cryptocurrency is virtually impossible to track. Banks do not control it. And Etherium even offers integration with iGaming. This cryptocurrency is freely available in almost all virtual gambling establishments, with its help it is also possible to bet on sports.
The user will need an application with a wallet - for example, from the Binance exchange. Cryptocurrency can be purchased for real money, including by converting Rubles into Etherium and other "conditional units".
Mobile payments
They are partially restricted for Russia, but the provider can make sure that transfers from the ruble zone are converted into any other conditional units - dollars, euros, etc. directly on the client's account.
Mobile payments were originally supported by Apple and Google. They have survived in most countries. In Russia, similar services from various banks - for example, Sberbank.
The online casino provider is obliged to ensure the security and anonymity of transactions. That is, to make it so that it is not "visible" that the user is paying to the gambling establishment. This is quite feasible technically.

QR codes
A handy technology that saves the user from having to enter any numbers. You show the code, which is scanned by your phone. And the payment takes place. The provider can use different technical means for this purpose based on cryptocurrency or ordinary wallets.Security, simplicity, accessibility - the key payment points in online casinos. If it becomes too difficult to transfer or withdraw money, people will simply leave.
No one wants to spend an hour on tricky manipulations. Or risk giving their honestly earned money to some scammer. Therefore, providers should take care to make users comfortable. And the players themselves - look at the available payment methods and withdrawals before creating an account.