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FOAM

Foam is excited to announce the launch of Trust Zone, the Foam Location incentivized testnet.
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FOAM
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FOAM Team
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What is FOAM?
FOAM is built on the Ethereum blockchain, a decentralized database that is secure without a third party or gatekeeper. Blockchains mean that FOAM is transparent and censorship-resistant, and can provide secure location data for other applications. The FOAM token gives participants control over their location network and requires them to make decisions that impact its future.
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Construction and management simulation
Blockchain
Ethereum
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FOAM
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Windows, macOS
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FOAM Team
FAQ
A Trust Zone is a beta radio network run by partner participants to further test and further develop the FOAM Proof of Location protocol. A Trust Zone also serves as a development platform to implement new features and run localization experiments.

A Trust Zone requires a minimum of 4 radios installed with quality line of site visibility to each other. A Zone maintains a quorum over time and space across their location horizon by upholding accuracy and precision, Trust Zones will play a crucial role in verifying the growth of the network and uphold sovereign and secure location services. This is infrastructure for the future.
The goal of the Trust Zone program is to test FOAM technology is as many types of environments as possible. A diverse set of test data will further refine localization performance. Participants in the Trust Zone program are welcome to build their Zones across urban and rural environments.

In addition to line of sight between four Zone Anchors, basic requirements for a Zone regardless of environment type is for each Zone Anchor radio to have access to power and internet backhaul.
An additional goal of the Trust Zone testing program is to further understand this question. As a radio based system, the performance of the network is impacted by a number of factors such as signal obstruction from buildings. Each Trust Zone will have its own limits on distance and size and will need to take this into consideration. The optimal zone configuration for each Trust zone will take some trial and error.

While the radio’s used in each Zone Anchor can transmit up to multiple miles, within FOAM the localization performance is directly correlated to how consistently each of the four or more nodes receive each others radio packets. The further away Zone Anchors are from each other the higher the chance there will be packet loss, degrading performance of localization. Participants will contribute in determining a system wide maximum zone as a best practice.

The Current FOAM test Zone in the Brooklyn Navy Yard has a maximum distance of 1 kilometer between Zone Anchors, in a dense industrial environment, as a starting baseline data point. When building a Zone tests are required before committing to the selected locations. One of the first steps is to run a visibility and packet align test across the Zone Anchors to assess the location's viability. Partner participants will work with the Foamspace team on assessing the results of these tests before approving a permanent installation of the Zone.
Yes, initial selected parter participants for the Trust Zone program are highly encouraged to build and assemble their own Zone Anchors. The Foamspace team will be able to provide key custom components as well as components that may be hard to find due to supply chain challenges. Participants will have the option to receive pre-assembled hardware on a need be basis.
If you are planning on installing Zone Anchors on buildings that you do not own, you will need to arrange authorization or procure a lease with the building owner. Each partner participant will have to solve for this based on their circumstances. In general Universities are great hosts for Trust Zones as an agreement is needed with only one entity for multiple buildings.

In areas without tall buildings, such as suburban or rural environments, for good radio visibility, properly secured and legally set up antenna masts or small scale towers can be used to mount the Zone Anchor and/or its antennas. Installing such a set up on top of elevated areas such as hills is also a recommended solution
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