Samsung has introduced a number of new things that can potentially cause hiccups to the aftermarket industry.
1) Firmware has been upgraded in new printer models. (So keep an eye out for any compatibility issues)
2) Samsung printer firmware can now be upgraded by just installing a new genuine toner cartridge, this is a new function of the chip on the cartridge.
As an example if your customer installs a new genuine cartridge the firmware of the printer may be upgraded. If the firmware is not compatible with the aftermarket cartridges that are already in the machine then those cartridges will fail on the spot. This is a potential nightmare for us all!
We haven't seen any major issues as of yet but we believe its best to be aware of this potential problem.