Well, there will always be solvent made for new type of
ink.
Just that you need to research onto what kind of solvent it
is.
The typical "low tech" person will not have access to such a
solvent/ink to start off.
such features just prevents most fraudsters. but cheque frauds with
more sophisticated tools are just more inconvenienced that they
rather use other forms of fraud then to do cheque fraud.
Security inks have been in the industry for very long time. last
time companies usually use homogeneous inks (ONLY BLACK). this is
so that any potential fraud can be found using
chromatography.
Companies like secura forms, will keep secret on cheque printing
menthods. And if you notice Secura installation in Ubi is a
protected place.
Alot of security measures are put in place to deter frauds. But if
you are dedicated into defrauding somebody, you are facing heavier
penalties too.