Screenshot grabber for unity

CaptureScreenshot.cs

using UnityEngine;
using System.Collections;
using System.IO;  

public class CaptureScreenshot : MonoBehaviour {
  
	public int sizeMultiplier = 2;
	public string prefix = "Scale_Screen"; 
	
	int incrementValue = 0; 
	string dateAndTime = "DEFAULT"; 
	string screenshotName; 
	string screenshotPath; 
	
	public KeyCode hotkey = KeyCode.P; 
		
	void Start(){
		GeneratePathAndFileName(); 
	}
	
	void GeneratePathAndFileName(){
//		dateAndTime = System.DateTime.Now.ToString();
//		dateAndTime = System.DateTime.Today.ToShortTimeString(); 
		dateAndTime = System.DateTime.Today.ToString("d"); 
		dateAndTime = dateAndTime.Replace("/", "-"); 
		
		screenshotName = "/" + prefix + "_" + dateAndTime + "_" + incrementValue; 
		
//		screenshotPath = Application.persistentDataPath + "/Screens" + screenshotName + ".png"; 
 		screenshotPath = Application.persistentDataPath + screenshotName + ".png"; 
		
		CheckForExisting();
	}
	
	IEnumerator CheckForExisting(){
		do
		{
			Debug.Log ("SCREENSHOT ALREADY EXISTS");
			incrementValue++; 
			GeneratePathAndFileName(); 
			yield return 0; 
		}while(File.Exists(screenshotPath));
		incrementValue++; 
		GeneratePathAndFileName();
		
	}
	
	IEnumerator PrepScreenshot(){
		GeneratePathAndFileName();
		while(File.Exists(screenshotPath))
		{
			Debug.Log ("SCREENSHOT ALREADY EXISTS");
			incrementValue++; 
			GeneratePathAndFileName(); 
			yield return 0; 
		} 
		
		TakeScreenshot(); 
		
	}
		
	void TakeScreenshot(){
		Debug.Log(" ------------------ Taking screenshot!" + screenshotPath + " at " + Time.timeSinceLevelLoad); 

		Application.CaptureScreenshot(screenshotPath, sizeMultiplier);

	}
	
	void Update(){
		if(Input.GetKeyDown(hotkey)){
  
			StartCoroutine(PrepScreenshot()); 
		}
	}
}