diff --git a/common/Cargo.lock b/common/Cargo.lock
index 586e64e..7e6c365 100644
--- a/common/Cargo.lock
+++ b/common/Cargo.lock
@@ -2,13 +2,77 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "common"
 version = "0.1.0"
 dependencies = [
  "serde",
+ "sha3",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16b80225097f2e5ae4e7179dd2266824648f3e2f49d9134d584b76389d31c4c3"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "keccak"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
+dependencies = [
+ "cpufeatures",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.167"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d6582e104315a817dff97f75133544b2e094ee22447d2acf4a74e189ba06fc"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.92"
@@ -47,6 +111,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "sha3"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
+dependencies = [
+ "digest",
+ "keccak",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.90"
@@ -58,8 +132,20 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
+
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
diff --git a/common/Cargo.toml b/common/Cargo.toml
index 81e97a8..a1f73e8 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -4,4 +4,5 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+sha3 = {version="0.10.0", default-features=false}
 serde = { version = "1.0.203", default-features = false, features = ["derive"] }
diff --git a/common/src/lib.rs b/common/src/lib.rs
index 123e34f..db2d4b9 100644
--- a/common/src/lib.rs
+++ b/common/src/lib.rs
@@ -1,6 +1,7 @@
 #![no_std]
 use serde::Deserialize;
 use serde::Serialize;
+use sha3::{Digest, Sha3_256};
 
 #[derive(Serialize, Deserialize, Debug)]
 pub enum Request {
@@ -25,7 +26,24 @@ pub enum Name {
     Thia,
     Michael,
     Zoey,
-    Coke,
     Unknown,
 }
 
+impl Name {
+    pub fn from_badge(badge: u64) -> Self {
+        let mut hasher = Sha3_256::new();
+        hasher.update(badge.to_be_bytes());
+
+        let hash = hasher.finalize();
+        let hash = u64::from_be_bytes(hash[..8].try_into().unwrap());
+
+        match hash {
+            0x14b9c91fe4505456 => Self::Evan,
+            0x6b859025842cd369 => Self::Andy,
+            0xb366d73deaaa8d9d => Self::Felix,
+            0x30c79f56dc74f998 => Self::Phil,
+            _ => Self::Unknown,
+        }
+    }
+}
+
diff --git a/inside/Cargo.lock b/inside/Cargo.lock
index 206a49b..5c018c0 100644
--- a/inside/Cargo.lock
+++ b/inside/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "aead"
diff --git a/outside/Cargo.lock b/outside/Cargo.lock
index 070fb6e..2f072e2 100644
--- a/outside/Cargo.lock
+++ b/outside/Cargo.lock
@@ -265,6 +265,7 @@ name = "common"
 version = "0.1.0"
 dependencies = [
  "serde",
+ "sha3",
 ]
 
 [[package]]
@@ -1392,6 +1393,15 @@ version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d75a2a4b1b190afb6f5425f10f6a8f959d2ea0b9c2b1d79553551850539e4674"
 
+[[package]]
+name = "keccak"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
+dependencies = [
+ "cpufeatures",
+]
+
 [[package]]
 name = "lalrpop"
 version = "0.19.12"
@@ -2074,6 +2084,16 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f179d4e11094a893b82fff208f74d448a7512f99f5a0acbd5c679b705f83ed9"
 
+[[package]]
+name = "sha3"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
+dependencies = [
+ "digest",
+ "keccak",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
diff --git a/outside/src/auth.rs b/outside/src/auth.rs
index d9259ac..0693411 100644
--- a/outside/src/auth.rs
+++ b/outside/src/auth.rs
@@ -33,14 +33,15 @@ impl Authorized for Name {
         }
     }
     async fn from_badge(badge: u64) -> Self {
-        match badge {
-            badge => {
+        match Name::from_badge(badge) {
+            Name::Unknown => {
                 if let Some(name) = NAMES.lock().await.borrow().get(badge) {
                     *name
                 } else {
                     Name::Unknown
                 }
             },
+            badge => badge,
         }
     }
 }
@@ -53,7 +54,7 @@ pub async fn send_badge(channel: Receiver<'static,CriticalSectionRawMutex,u64,1>
         let card = channel.receive().await;
 
         *LAST_BADGE.lock().await.borrow_mut() = card;
-        let name = Name::from_badge(card).await;
+        let name= <Name as Authorized>::from_badge(card).await;
 
         // this is also checked on the backend (TODO)
         if !name.authorized() {
diff --git a/outside/src/music.rs b/outside/src/music.rs
index 437dd02..5f6b194 100644
--- a/outside/src/music.rs
+++ b/outside/src/music.rs
@@ -47,7 +47,6 @@ impl Tracks for Name {
             Name::Thia => 7,
             Name::Michael => 0,
             Name::Zoey => 1,
-            Name::Coke => todo!(),
             Name::Unknown => 0,
         }
     }
@@ -66,7 +65,6 @@ impl Tracks for Name {
             Name::Thia => "thia",
             Name::Michael => "michael",
             Name::Zoey => "zoey",
-            Name::Coke => "button",
             Name::Unknown => "",
         }
     }
@@ -82,6 +80,7 @@ pub enum MusicCommand {
     /// 0-30
     SetVolume(u8),
     Play(&'static str),
+    Button(),
 }
 
 #[embassy_executor::task]
@@ -125,6 +124,10 @@ pub async fn music_manager(uart: UART1, irqs: Irqs, txp: PIN_20, rxp: PIN_21) ->
                 }
 
             },
+            MusicCommand::Button() => {
+                let index = rng.next_u32() % 12 as u32;
+                play_song("b", Some((index+1) as u8), &mut uart).await;
+            },
             MusicCommand::Play(song) => {
                 play_song(song, None, &mut uart).await
             },
diff --git a/server/Cargo.lock b/server/Cargo.lock
index 06a9648..7012ba7 100644
--- a/server/Cargo.lock
+++ b/server/Cargo.lock
@@ -125,6 +125,15 @@ version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -154,6 +163,16 @@ name = "common"
 version = "0.1.0"
 dependencies = [
  "serde",
+ "sha3",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16b80225097f2e5ae4e7179dd2266824648f3e2f49d9134d584b76389d31c4c3"
+dependencies = [
+ "libc",
 ]
 
 [[package]]
@@ -177,6 +196,16 @@ version = "0.8.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
 
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
 [[package]]
 name = "deranged"
 version = "0.3.11"
@@ -186,6 +215,16 @@ dependencies = [
  "powerfmt",
 ]
 
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
 [[package]]
 name = "embedded-io"
 version = "0.4.0"
@@ -302,6 +341,16 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
 [[package]]
 name = "gimli"
 version = "0.31.1"
@@ -418,6 +467,15 @@ version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d75a2a4b1b190afb6f5425f10f6a8f959d2ea0b9c2b1d79553551850539e4674"
 
+[[package]]
+name = "keccak"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
+dependencies = [
+ "cpufeatures",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -748,6 +806,16 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "sha3"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
+dependencies = [
+ "digest",
+ "keccak",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -1027,6 +1095,12 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.14"
@@ -1039,6 +1113,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"