It is open. But don't be fooled by the mobile mining gimmick. Because it's not real mining. It's supposedly just a coin distribution / airdrop scheme. You can't mine anything with mobile phone hardware, not with meaningful speed anyway.
Do agree,
Have checked apps like minergate. They mine with Cryptonight (Bytecoin / Monero / etc) on mobile phone.
Appart from heating your phone, you won't make serious hashes.
It give's an mining experience. It doesn't directly add blocks to to chain.
These users will be encouraged and likely to take advantage of the significant mining speed and coin emission improvements of mining with the Windows, Mac or Linux GUI miner
In tech whitepapers it shows just being a fork of this same algo, so can not expect this to mine well by mobile phone.
The mobile mining experience does not download a copy of the blockchain or carry out intensive CPU operations
to provide egalitarian proof of work, it is intended to give entry level access to a cryptocurrency by allowing the
experience of mining (i.e. being issued a hash rate reflective of the CPU processing power of the device and being
awarded coins for participating in the experience). The Mobile mining experience does not directly add blocks to
the blockchain and thus it does not overheat the mobile device or use precious bandwidth. The CPU of the device
is periodically queried to ensure the simulated hashrate is correctly balanced with the other running processes and
it gives the user a very realistic mining experience, including accurately issuing Electroneum coin rewards.
The issued Electroneum coins are true Electroneum coins, the same as issued by the Windows, Mac and Linux
full miner. The Windows, Mac and Linux full miner does download the full blockchain and operate in a fully
decentralized manner.
The mobile mining experience has been designed to yield rapid user growth. These users will be encouraged
and likely to take advantage of the significant mining speed and coin emission improvements of mining with the
Windows, Mac or Linux GUI miner, which will enable Electroneum to grow to huge user numbers via the app,
whilst still retaining a significant mining community running the transactional blockchain by running the intuitive
Windows, Mac or Linux application.
The centralized nature of the mobile app will also allow Electroneum to perform transfers of Electroneum via the
contact list in the device, rather than using lengthy public keys which are currently required by all decentralized
blockchains. Those public keys still exist and can be used but a simpler, more intuitive way of using cryptocurrency
is envisaged.