I think you can't do that. There is a trick that can you apply, but keep in mind if you are really a fair person and if you don't have any intention of cheating then you can apply these tricks.
First, use your cell phone and sim card data provider to register the site, If you do that the casino will be informed about your real IP and location, they will save that information for future reference. After successfully registering then you can use VPN software to login to the site on your laptop if the casino allowed VPN.

Again, If you have the intention to cheat & abuse the system with multiple IDs then no tricks will work, artificial intelligence will catch you, they also have the technology to determine your intention.