diff --git a/docs/index.md b/docs/index.md
index e4329265..63fc9ad4 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -23,3 +23,12 @@ In order to build Obliteration from source make sure you have the following prer
   - `Desktop development with C++` workload is required
 - [Windows Terminal](https://aka.ms/terminal)
   - You can use a classic `Command Prompt` but make sure you enable [ANSI escape sequences](https://stackoverflow.com/q/16755142/1829232)
+
+## AArch64
+
+- Rust on the latest nightly channel
+  - You can install with `rustup toolchain install nightly`
+- Rust std source for nightly
+  - You can install with `rustup component add rust-src --toolchain nightly`
+- Rust `aarch64-unknown-none-softfloat` target
+  - You can install with `rustup target add aarch64-unknown-none-softfloat`
diff --git a/gui/src/graphics/metal/mod.rs b/gui/src/graphics/metal/mod.rs
index 2211e95f..66596c0b 100644
--- a/gui/src/graphics/metal/mod.rs
+++ b/gui/src/graphics/metal/mod.rs
@@ -43,8 +43,8 @@ impl GraphicsBuilder for MetalBuilder {
 }
 
 impl super::PhysicalDevice for metal::Device {
-    fn id(&self) -> &[u8] {
-        todo!()
+    fn id(&self) -> Vec<u8> {
+        self.deref().registry_id().to_ne_bytes().into()
     }
 
     fn name(&self) -> &str {
diff --git a/gui/src/graphics/mod.rs b/gui/src/graphics/mod.rs
index 10d91aed..0dbf5b38 100644
--- a/gui/src/graphics/mod.rs
+++ b/gui/src/graphics/mod.rs
@@ -28,7 +28,7 @@ pub trait GraphicsBuilder: 'static {
 
 /// Represents a graphics hardware.
 pub trait PhysicalDevice: Sized {
-    fn id(&self) -> &[u8];
+    fn id(&self) -> Vec<u8>;
     fn name(&self) -> &str;
 }
 
diff --git a/gui/src/graphics/vulkan/mod.rs b/gui/src/graphics/vulkan/mod.rs
index f1c1e01a..c851729a 100644
--- a/gui/src/graphics/vulkan/mod.rs
+++ b/gui/src/graphics/vulkan/mod.rs
@@ -171,8 +171,8 @@ pub struct PhysicalDevice {
 }
 
 impl super::PhysicalDevice for PhysicalDevice {
-    fn id(&self) -> &[u8] {
-        &self.id
+    fn id(&self) -> Vec<u8> {
+        self.id.into()
     }
 
     fn name(&self) -> &str {