diff --git a/README.md b/README.md
index 199d214..460e8c6 100644
--- a/README.md
+++ b/README.md
@@ -156,6 +156,8 @@ python3 photo_tagger.py auto-match --auto --show-faces
 - 🚫 **Smart Navigation** - Next button disabled on last person, Back button disabled on first
 - 💾 **Bidirectional Changes** - Can both identify and unidentify faces in the same session
 - ⚡ **Optimized Performance** - Efficient database queries and streamlined interface
+ - 🔍 **Last Name Search** - Filter matched people by last name (case-insensitive) in the left panel
+ - 🎯 **Filter-Aware Navigation** - Auto-selects the first match; Back/Next respect the filtered list
 
 ### View & Modify Identified Faces (NEW)
 ```bash
@@ -166,6 +168,9 @@ python3 photo_tagger.py modifyidentified
 This GUI lets you quickly review all identified people, rename them, and temporarily unmatch faces before committing.
 
 **Left Panel (People):**
+- 🔍 **Last Name Search** - Search box to filter people by last name (case-insensitive)
+- 🔎 **Search Button** - Apply filter to show only matching people
+- 🧹 **Clear Button** - Reset filter to show all people
 - 👥 **People List** - Shows all identified people with face counts in full name format including middle names, maiden names, and birth dates
 - 🖱️ **Clickable Names** - Click to select a person (selected name is bold)
 - ✏️ **Edit Name Icon** - Comprehensive person editing with all fields; tooltip shows "Update name"
@@ -673,6 +678,8 @@ This is now a minimal, focused tool. Key principles:
 
 ### 🎨 Enhanced Modify Identified Interface (NEW!)
 - ✅ **Complete Person Information** - Shows full names with middle names, maiden names, and birth dates
+- ✅ **Last Name Search** - Filter people by last name with case-insensitive search
+- ✅ **Auto-Selection** - Automatically selects first person in filtered results
 - ✅ **Comprehensive Editing** - Edit all person fields: first, last, middle, maiden names, and date of birth
 - ✅ **Visual Calendar Integration** - Professional date picker with month/year navigation
 - ✅ **Smart Validation** - Save button only enabled when all required fields (first name, last name, date of birth) are filled