What are the limitations of using digital fingerprints for PC identification in PHP applications?

One limitation of using digital fingerprints for PC identification in PHP applications is that they can be easily manipulated or spoofed, leading to inaccurate identification. To improve accuracy, additional security measures such as encryption and authentication protocols should be implemented. 

// Example code implementing encryption for digital fingerprints
$pcFingerprint = hash('sha256', $_SERVER['HTTP_USER_AGENT'] . $_SERVER['REMOTE_ADDR']);
$encryptedFingerprint = openssl_encrypt($pcFingerprint, 'AES-256-CBC', 'secret_key');

Keywords

digital fingerprints PC identification limitations PHP applications error types

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