diff --git a/OmiseSDK/Sources/Views/Components/TextFields/CardCVVTextField.swift b/OmiseSDK/Sources/Views/Components/TextFields/CardCVVTextField.swift
index 9a58ff1c..fb99b340 100644
--- a/OmiseSDK/Sources/Views/Components/TextFields/CardCVVTextField.swift
+++ b/OmiseSDK/Sources/Views/Components/TextFields/CardCVVTextField.swift
@@ -6,6 +6,8 @@ import UIKit
 open class CardCVVTextField: OmiseTextField {
     private let validLengths = 3...4
     
+    open var shouldBeginEditingHandler: (() -> Bool)?
+    
     open override var delegate: UITextFieldDelegate? {
         get {
             return self
@@ -62,4 +64,9 @@ extension CardCVVTextField {
         
         return maxLength >= (self.text?.count ?? 0) - range.length + string.count
     }
+    
+    open func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool
+    {
+        return shouldBeginEditingHandler?() ?? true
+    }
 }
diff --git a/OmiseSDK/Sources/Views/Components/TextFields/CardNumberTextField.swift b/OmiseSDK/Sources/Views/Components/TextFields/CardNumberTextField.swift
index 43a717d1..21a30f6d 100644
--- a/OmiseSDK/Sources/Views/Components/TextFields/CardNumberTextField.swift
+++ b/OmiseSDK/Sources/Views/Components/TextFields/CardNumberTextField.swift
@@ -15,6 +15,8 @@ open class CardNumberTextField: OmiseTextField {
         return pan.brand
     }
     
+    open var shouldBeginEditingHandler: (() -> Bool)?
+    
     open override var tokenizer: UITextInputTokenizer {
         return cardNumberStringTokenizer
     }
@@ -310,4 +312,9 @@ extension CardNumberTextField {
         
         return maxLength >= (self.text?.count ?? 0) - range.length + string.count
     }
+    
+    open func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool
+    {
+        return shouldBeginEditingHandler?() ?? true
+    }
 }