VerifiedVisitors works as an API service and doesn't sit in-line.
This just isn't the normal way of doing this, and typically out customers are not aware of this approach.
Just like the anti-virus software, this can cause frustrating delays and system slow down for your visitors and even system crashes. This has been the essential trade off - between the benefits of additional protection and security, versus a slow-down on overall system response times.
The problem with this approach is twofold; firstly that the bot detection software adds another security failure point and second, it can slow the customer web site speed down, as the bot detection performs the fingerprinting verification.
For applications where security and overall system integrity is paramount, or where no latency is possible for example for e-commerce applications, VerifiedVisitors performs at scale, to manage your bot activity without the additional security risks.