diff --git a/zingolib/src/wallet/keys/ledger.rs b/zingolib/src/wallet/keys/ledger.rs
index 3569f07bf..71650f3e4 100644
--- a/zingolib/src/wallet/keys/ledger.rs
+++ b/zingolib/src/wallet/keys/ledger.rs
@@ -6,6 +6,8 @@ use std::io;
 use secp256k1::{PublicKey, Secp256k1, SecretKey};
 use crate::wallet::traits::ReadableWriteable;
 
+use super::unified::InternalCapability;
+
 /// Holds ledger things
 #[derive(Debug)]
 pub struct LedgerKeys {
@@ -82,4 +84,64 @@ impl ReadableWriteable for LedgerKeys {
 
         Ok(())
     }
+}
+
+impl InternalCapability for LedgerKeys {
+    fn get_ua_from_contained_transparent_receiver(
+        &self,
+        capability: super::unified::WalletCapability,
+        receiver: &zcash_primitives::legacy::TransparentAddress,
+    ) -> Option<zcash_keys::address::UnifiedAddress> {
+        todo!()
+    }
+
+    fn addresses(&self, capability: super::unified::WalletCapability) -> &append_only_vec::AppendOnlyVec<zcash_keys::address::UnifiedAddress> {
+        todo!()
+    }
+
+    fn transparent_child_addresses(
+        &self, 
+        capability: super::unified::WalletCapability
+    ) -> &std::sync::Arc<append_only_vec::AppendOnlyVec<(usize, zcash_primitives::legacy::TransparentAddress)>> {
+        todo!()
+    }
+
+    fn new_address(
+        &self,
+        capability: super::unified::WalletCapability,
+        desired_receivers: super::unified::ReceiverSelection,
+        legacy_key: bool,
+    ) -> Result<zcash_keys::address::UnifiedAddress, String> {
+        todo!()
+    }
+
+    fn generate_transparent_receiver(
+        &self,
+        capability: super::unified::WalletCapability,
+        // this should only be `true` when generating transparent addresses while loading from legacy keys (pre wallet version 29)
+        // legacy transparent keys are already derived to the external scope so setting `legacy_key` to `true` will skip this scope derivation
+        legacy_key: bool,
+    ) -> Result<Option<zcash_primitives::legacy::TransparentAddress>, bip32::Error> {
+        todo!()
+    }
+
+    fn get_taddr_to_secretkey_map(
+        &self,
+        capability: super::unified::WalletCapability,
+        chain: &crate::config::ChainType,
+    ) -> Result<std::collections::HashMap<String, secp256k1::SecretKey>, crate::wallet::error::KeyError> {
+        todo!()
+    }
+
+    fn first_sapling_address(&self, capability: super::unified::WalletCapability) -> sapling_crypto::PaymentAddress {
+        todo!()
+    }
+
+    fn get_trees_witness_trees(&self, capability: super::unified::WalletCapability) -> Option<crate::data::witness_trees::WitnessTrees> {
+        todo!()
+    }
+
+    fn can_view(&self, capability: super::unified::WalletCapability) -> super::unified::ReceiverSelection {
+        todo!()
+    }
 }
\ No newline at end of file
diff --git a/zingolib/src/wallet/keys/unified.rs b/zingolib/src/wallet/keys/unified.rs
index dedab5f3f..c3e5f03cb 100644
--- a/zingolib/src/wallet/keys/unified.rs
+++ b/zingolib/src/wallet/keys/unified.rs
@@ -239,6 +239,7 @@ pub struct WalletCapability {
     /// Cache of unified_addresses
     unified_addresses: append_only_vec::AppendOnlyVec<UnifiedAddress>,
     addresses_write_lock: AtomicBool,
+    capability: InternalCapability,
 }
 impl Default for WalletCapability {
     fn default() -> Self {