Use Joomla CAPTCHA for OS Calendar Checkout Booking

Dear Support Team,
The current CAPTCHA in OS Calendar does not look very good and also does not seem secure enough.
I would like to suggest using Joomla CAPTCHA instead, especially for the Checkout Booking page, in order to improve the security of the booking process. I believe this would provide a better and more reliable solution for spam protection and overall site security.
Regards, 
Wouter

Hi Ronald,
We agree that the current CAPTCHA in OS Calendar is quite basic and does not provide a high level of security.
We will improve this in the upcoming version of OS Calendar so that the CAPTCHA solution is more secure and reliable.
Thanks
Dam