diff --git a/app/Http/Controllers/Staff/StudiesController.php b/app/Http/Controllers/Staff/StudiesController.php
index b5fd47c..7b71cb0 100644
--- a/app/Http/Controllers/Staff/StudiesController.php
+++ b/app/Http/Controllers/Staff/StudiesController.php
@@ -4,6 +4,7 @@
 
 use App\Http\Controllers\HashidControllerBase;
 use App\Models\Study;
+use App\Services\AuditTrail\Activity;
 
 class StudiesController extends HashidControllerBase
 {
@@ -20,6 +21,10 @@ public function details()
     {
         $this->decodeKeys();
         $study = Study::with(['series', 'details'])->findOrFail($this->key);
+        audit()
+            ->did(Activity::Study_Metadata_View)
+            ->on($study)
+            ->log();
 
         //return view('staff.studies.details', compact('study'));
         return response()->json($study);
diff --git a/app/Services/AuditTrail/Activity.php b/app/Services/AuditTrail/Activity.php
index 2141a0c..a256fb3 100644
--- a/app/Services/AuditTrail/Activity.php
+++ b/app/Services/AuditTrail/Activity.php
@@ -7,11 +7,13 @@ final class Activity
     // studies
     public const int Study_Open = 101;
 
-    public const int Study_Metadata_Edit = 102;
+    public const int Study_Metadata_View = 102;
 
-    public const int Study_History_View = 103;
+    public const int Study_Metadata_Edit = 103;
 
-    public const int Study_History_Update = 104;
+    public const int Study_History_View = 104;
+
+    public const int Study_History_Update = 105;
 
     // report
 
diff --git a/app/Services/AuditTrail/ActivityLogger.php b/app/Services/AuditTrail/ActivityLogger.php
index 60c5268..a4d697a 100644
--- a/app/Services/AuditTrail/ActivityLogger.php
+++ b/app/Services/AuditTrail/ActivityLogger.php
@@ -22,6 +22,13 @@ class ActivityLogger
 
     private ?string $userAgent = null;
 
+    private ?string $ipAddr = null;
+
+    /**
+     * @var true
+     */
+    private bool $anonymous = false;
+
     public function __construct()
     {
         $this->category = Category::GENERAL;
@@ -34,10 +41,10 @@ public function on(Study $study): static
         return $this;
     }
 
-    public function by(Authenticatable|int $user): static
+    public function by(Authenticatable|int|null $user = null): static
     {
-        if ($user == null) {
-            return $this;
+        if ($user === null) {
+            $user = auth()->user();
         }
 
         if ($user instanceof Authenticatable) {
@@ -84,14 +91,38 @@ public function ua(?string $agent = null): static
         return $this;
     }
 
-    public function log(): bool
+    public function ip(?string $addr = null): static
     {
+        $this->ipAddr = $addr ?? request()->ip();
+
+        return $this;
+    }
+
+    public function anon()
+    {
+        $this->anonymous = true;
+        $this->userId = null;
+
+        return $this;
+    }
+
+    public function log(bool $initDefaults = true): bool
+    {
+        if ($initDefaults) {
+            $this->ip();
+            $this->url();
+            $this->ua();
+            if ($this->userId === null && ! $this->anonymous) {
+                $this->by();
+            }
+        }
+
         return DB::table('audit_logs')->insert([
             'study_id' => $this->studyId,
             'user_id' => $this->userId,
             'category' => $this->category,
             'activity' => $this->activity,
-            'ip_addr' => request()->ip(),
+            'ip_addr' => $this->ipAddr,
             'user_agent' => $this->userAgent,
             'url' => $this->url,
             'notes' => $this->notes,