but you also have to make sure you make them before the module’s popularity increases. Learning from the Arduino example, the earlier you can make such changes, the better, so if the author is ...

“You can’t put new wine in old bottles ... Instead, he drew up a simple schematic that used an Arduino Nano, an FM radio module based on the TEA5767, and an audio amplifier based ...

but you can build your own secure access with an Arduino. Just be warned: this one is a bit more complicated than the others ...