add friends recovery draft

ideas/152-friends-recovery.md

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+# Friends Recovery (Secret Multisig)
+
+## Preamble
+
+    Idea: 152-friends-recovery
+    Title: Friends Recovery (Secret Multisig)
+    Status: Draft
+    Created: 2018-04-07
+    Requires: #145
+
+
+## Summary
+
+A multisig controller that store owners privately and requires a secret to sign a call, to be used as a recovery for Identity through trust of selected friends.
+
+## Swarm Participants
+- Lead Contributor: @3esmit
+- Testing & Evaluation:
+- Contributor: @richard-ramos
+- PM: 
+- UX: 
+
+## Product Overview
+
+A bad experience of cryptosystems is the lost or exposure of a private key, which can lead to irreversible situations. 
+Some contracts, such as Identity, support a recovery address which can recover a lost key or compromised contract.
+This product will provide a way of Status users selecting friends to recover this contracts, together with a built-in user interface for requesting to friends and signing recovery request from locked-out friends. 
+
+### Product Description
+
+User would be able to:
+- Use semi-private data as secret, such as personal details or biometric data.
+- Select privately a big amount of friends able to recover but only require a few of them
+
+Locked out user would be able to:
+- Request recovery to friends
+
+User's friends would be able to:
+- Only know they are recovery when recovery is completed
+- Sign recovery call allowance for Friends Recovery contract to help locked out user (gas is paid by anyone/user)
+- Call Friends Recovery from Identity call allowance to help locked out friends (gas is paid by allower)
+
+
+### Requirements & Dependencies
+
+- Idea 151-Identity is the first use case of this product, but Friends Recovery contract itself don't depend on Identity.
+
+### Minimum Viable Product
+
+Goal Date: <!-- Date for evaluation in ISO 8601 (yyyy-mm-dd) format --> 
+
+Description: 
+ 
+ - Users can use a semi-private secret answer as recovery lock
+ - Users can use friends as allowance for Identity recovery
+ - Users are notified when a recovery is requested for them
+ - Users can help locked out friends to recover their Identity without paying gas
+
+
+## Success Metrics
+
+- Users are able to easly recover their Identity.
+
+## Exit criteria
+
+- Becomes an extension of Identity settings 
+
+## Supporting Role Communication
+<!-- Once Requirements and Goals are fleshed out, then it should be communicated to supporting organelles if required -->
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).