Omnilux product photograph; used to illustrate device format Bildnachweise
A considered starting point
Save the exact product and purchase date in your device profile. Keep a copy of the invoice outside public posts. Note accessories and service interactions; never publish a full serial number or private contact information.
Put it into practice
Link stories to the device profile so your observations remain in order. Use private visibility for notes you do not want indexed or discussed, and make a separate public summary when ready.
