[taler-docs] 02/02: some ideas

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dold pushed a commit to branch master
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commit 12a3571f5de4b3751973b3f50d149edb938a7018
Author: Florian Dold <florian@dold.me>
AuthorDate: Fri Nov 6 18:15:12 2020 +0100

    some ideas
---
 design-documents/009-backup.rst | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/design-documents/009-backup.rst b/design-documents/009-backup.rst
index 80393f5..1b4895e 100644
--- a/design-documents/009-backup.rst
+++ b/design-documents/009-backup.rst
@@ -62,6 +62,9 @@ Supported Operations
   The abandoned wallet marks explicitly in its backup blob that it is 
abandoned.
   Abandoning a wallet will set the backup state to "uninitialized".
 * **backup**: Do a backup cycle.
+* **rekey**:  Change to a new wallet root secret, in case the old one has been
+  compromised.  Only protectes future funds of the wallet from being
+  compromised.  Requires a new payment to all configured backup providers.
 
 
 Backup Format
@@ -92,8 +95,8 @@ Open Questions
 * What happens if the same Anastasis user has multiple wallets?  Can Anastasis 
somehow
   support multiple "instances" per application?
 
-Future Work
-===========
+Future Work / Ideas
+===================
 
 * Incremental backups?
 
@@ -102,6 +105,14 @@ Future Work
     be updated incrementally once the journal is full.
   * Leaks more information and is more complex.
 
-* Real-time synchronization, either over some signaling server
+* Mult-device synchronization, with synchronous communication either over some 
signaling server
   or P2P connectivity (WebRTC, etc.)
 
+  * Destroys the "wallet" metaphor, now the wallet is more like an account.
+  * We should first agree on the requirements from the perspective of end users
+  * P2P payments in Taler might also make sync less important
+  * Maybe only parts of the state (purchases / contracts, but not coins) 
should be synchronized?
+  * WhatsApp web model:  The wallet runs only on one devices, but other devices
+    can connect to it as clients.  (Allows my browser wallet to temporarily 
access
+    money from my phone wallet and vice versa.)
+

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