Today, with the trend of digitization of various processes (e-governance, telework, tele-medicine, ...) users are each time invited to register, to subscribe. This phenomenon of digitalization is becoming so widespread that even the tools we use on a daily basis are impacted (connected drill, connected meter, connected scale, connected watch, connected car, connected lighting, ...). It is therefore possible today to collect a greater amount of information thanks to digital technology (Digital Traces).The interest of this discussion is to alert all digital actors of the impact that the use of traces and the practices that result from them can have on the digitization process.