I was wondering why manufacturers only makes these anti-theft systems send out a frequency of 58 kHz. Is there something that will change in the system if we make the frequency higher or lower? Always been wondering that and if 58 kHz does end up being a limit, then why is it one? I might use this as a project demonstration we have to do for my college, but I just wanted to make sure that it's of a significance for me to delve deeper into. I already did the basic research on how the EAS works, but this is one thing I haven't found or been able to figure out myself. Any help would be appreciated and if this doesn't work out, I'll just look for another project to do. Don't have much inspiration at the moment so if you can suggest something to than that will help me out too =3.