WoT device HW id

Hi all

One of the use case for platform developers will be to match discovered WoT
device with its real world counterpart to build physical topologies. For
example deployment of hundreds of temperature sensors. What is the
recommended way to pair physical WoT server with discovered device?

Should solution for this usecase be dependent on
https://schema.org/serialNumber only, or is there a plan to include hw
device id to TD structure as a unique identifier?

Best regards
Robert