We use destrucitble vinyl produce barcode labels.The destructible bar code labels will be a kind of tamper evident labels,they will break into many pieces once tampered.The labels with glassine liners could be printed barcode,you could custom the barcode with serials numers or QR is also ok.The security barcode labels are suitable for tracking your things and also protect them from tampered.And the adhesive is strong,they could be as the security shipping labels,electronics,such as PCB,PC boards