From 89ec86abd293e6294223e971278caf4aad2be190 Mon Sep 17 00:00:00 2001
From: merlokk <olegmsn@gmail.com>
Date: Wed, 1 Nov 2017 17:02:35 +0200
Subject: [PATCH] now SAK check is OK

---
 armsrc/iso14443a.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 01026aa5..860af238 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1817,8 +1817,8 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
 	}
 
 	// non iso14443a compliant tag
-	// now not work
-	//if( (sak & 0x20) == 0) return 2; 
+	// https://www.nxp.com/docs/en/application-note/AN10834.pdf page 7
+	if( (sak & 0x20) != 0) return 2; 
 
 	if (!no_rats) {
 		// Request for answer to select
-- 
2.39.2