Home-printed tags and electronic tags have to satisfy customs and security checks just like any other bag label. Customs authorities around the world may have different rules, but IATA stresses that HPBT/EBTs meet national baggage tracking and security requirements (iata.org). For customs, the key is that your tag (paper or electronic) provides the proper identification number for the bag. Customs might want to see a link between you (the passenger) and the bag. With HPBT/EBT, the airline’s database records that link, just as with a normal tag.
In practice, some customs officials may be unfamiliar with these newer tags, so it helps to be prepared. Always keep a copy of your boarding pass or booking confirmation handy. If a customs officer asks, you can show them the tag number on your bag and match it to your passport or ticket. Many off-airport check-in services train their staff to work with customs: they coordinate drop-off so baggage clearance rules are followed. For instance, any delayed or mishandled bags typically can’t be delivered off-airport if customs clearance isn’t done (iata.org).
The good news is that IATA has been actively engaging with governments. They provide guidelines and encourage regulators to explicitly support HPBT and EBT (iata.org). Customs cooperation is especially important for off-airport operations. If you are traveling and using HPBT/EBT at a remote location, the off-airport service provider will usually handle customs as needed (or instruct you on procedures).
Bottom line: As a passenger, use HPBT/EBT per airline instructions, and know that legally they are valid tags. If customs authorities have questions, calmly explain it’s your baggage tag printed or activated electronically. In many countries, authorities are already on board. If you ever have trouble, airlines and airports have rapid response teams to ensure compliance.