As a NFT the Signals will have great value; in the FOAM ecosystem, and as a secondary asset. I was thinking about this and in the white paper we read:
Cartographers will Signal where location services are needed, and in doing so increase the eventual block reward (the FOAM Tokens received through the mining process described below) of that location. This incentive mechanism is to coordinate Cartographers, in a grass roots fashion, to operate the protocol and further incentivize Cartographers to potentially operate Dynamic Proof of Location Zones themselves. While the goal of the Signal function is to incentivize the growth of the FOAM network and the increased adoption of the dynamic Proof of Location functionality described further below, there is no guarantee that those incentives will work as intended or result in predictable outcomes. While the Signal smart contract is designed to develop and grow the network, it is always possible that other economic incentives and behaviors could disrupt or alter the expected operation of the Signal function in unforeseen ways, up to and including possible negative outcomes for FOAM Network adoption, participation and utility.
and further it states;
The FOAM Token further provides the framework and incentive for Zone operators to set up specialized hardware beacons to broadcast coverage, further participate in the protocol and develop an overlaying peer-to-peer network of radio beacons called Zone Anchors. Zone Anchors can arrive at consensus on whether something is located at a certain point in time and space based on these radio beacons. Anchors that are part of a Zone will share a state machine on the history of the time data logs of the Zone and vote on additions to the log with a blockchain consensus. A Zone operates as its own blockchain where the validators are the Zone Anchors, which need to stake tokens to be given the authority to participate.
So the FOAM ecosystem depends on Signaling as a function, as without it we cannot bootstrap to the dPOL. I can imagine a scenario where a Zone operator would be dependent on a local Signal, since there is a weight to early Signals, and there will be a symbioses therein as the Zone operator will benefit more greatly from this early Signal, than in provisioning a New Signal. How is this symbioses determined in practice?
In addition to providing Zone operators with the ability to participate within a Zone, the token could also permit operators who choose to purchase the requisite hardware to offer location services via Zone Anchors, which would be similarly verified through the network-based consensus rules. Although any such upgrade would be dependent on the technological points discussed in the paragraphs below, from a network standpoint such upgrade could be achieved at a future date by voting/consensus mechanism within a particular FOAM TCR community that it would require such Zone verification from a certain point in time.
What remains to more clearly emerge is how the function of the Signal in the FOAM ecosystem, delivers recognized value to other participants. Or more clearly how with an earliest placed Signal, we will continue to see it deliver that value for the foreseeable future of FOAM.