diff --git a/ImagePicker/ImagePickerController.swift b/ImagePicker/ImagePickerController.swift
index 35aa72a..2706b19 100644
--- a/ImagePicker/ImagePickerController.swift
+++ b/ImagePicker/ImagePickerController.swift
@@ -53,6 +53,12 @@ public protocol ImagePickerControllerDelegate : class {
     /// to configure your cell based on asset media type, subtype, etc.
     ///
     func imagePicker(controller: ImagePickerController, willDisplayAssetItem cell: ImagePickerAssetCell, asset: PHAsset)
+    
+    ///
+    /// Called right before an asset item collection view cell is selected.
+    /// Return false to prevent selection
+    ///
+    func imagePicker(controller: ImagePickerController, shouldSelectCellAt: Int) -> Bool
 }
 
 //this will make sure all delegate methods are optional
@@ -63,6 +69,11 @@ extension ImagePickerControllerDelegate {
     public func imagePicker(controller: ImagePickerController, didTake image: UIImage) {}
     public func imagePicker(controller: ImagePickerController, willDisplayActionItem cell: UICollectionViewCell, at index: Int) {}
     public func imagePicker(controller: ImagePickerController, willDisplayAssetItem cell: ImagePickerAssetCell, asset: PHAsset) {}
+    // public func imagePicker(controller: ImagePickerController, willDisplayAssetItem cell: ImagePickerAssetCell, asset: PHAsset) {}
+    public func imagePicker(controller: ImagePickerController, shouldSelectCellAt: Int) -> Bool {
+        // default: Do not prevent selection
+        return true
+    }
 }
 
 
@@ -425,6 +436,9 @@ extension ImagePickerController: PHPhotoLibraryChangeObserver {
 }
 
 extension ImagePickerController : ImagePickerDelegateDelegate {
+    func imagePicker(delegate: ImagePickerDelegate, shouldSelectCellAt index: Int) -> Bool {
+        return self.delegate?.imagePicker(controller: self, shouldSelectCellAt: index) ?? true
+    }
     
     func imagePicker(delegate: ImagePickerDelegate, didSelectActionItemAt index: Int) {
         self.delegate?.imagePicker(controller: self, didSelectActionItemAt: index)
diff --git a/ImagePicker/ImagePickerDelegate.swift b/ImagePicker/ImagePickerDelegate.swift
index 3814e6d..60b8553 100644
--- a/ImagePicker/ImagePickerDelegate.swift
+++ b/ImagePicker/ImagePickerDelegate.swift
@@ -33,6 +33,9 @@ protocol ImagePickerDelegateDelegate : class {
     
     //func imagePicker(delegate: ImagePickerDelegate, didEndDisplayingAssetCell cell: ImagePickerAssetCell)
     func imagePicker(delegate: ImagePickerDelegate, didScroll scrollView: UIScrollView)
+    
+    // Called before selection happens
+    func imagePicker(delegate: ImagePickerDelegate, shouldSelectCellAt index: Int) -> Bool
 }
 
 final class ImagePickerDelegate : NSObject, UICollectionViewDelegateFlowLayout {
@@ -67,6 +70,7 @@ final class ImagePickerDelegate : NSObject, UICollectionViewDelegateFlowLayout {
     }
     
     func collectionView(_ collectionView: UICollectionView, shouldSelectItemAt indexPath: IndexPath) -> Bool {
+        guard delegate?.imagePicker(delegate: self, shouldSelectCellAt: indexPath.item) ?? true else { return false }
         guard let configuration = layout?.configuration else { return false }
         return selectionPolicy.shouldSelectItem(atSection: indexPath.section, layoutConfiguration: configuration)
     }