Grand MA 300 allows a brute-force attack on the PIN.Referenceshttp://packetstormsecurity.com/files/128003/Grand-MA-300-Fingerprint-Reader-Weak-PIN-Verification.htmlhttp://www.securityfocus.com/bid/69390http://seclists.org/fulldisclosure/2014/Aug/70https://exchange.xforce.ibmcloud.com/vulnerabilities/95485
