# MD for: https://www.mercadopago.com.ar/developers/pt/docs/wallet-connect/payment-flow/capture-payment/device-id.md

\# Integrate the Device ID The \*\*Device ID\*\* is an important piece of information to ensure better security and, consequently, a better payment approval rate. It's a \*\*unique number that's used to identify a customer's device\*\* when they are buying. If a customer makes a purchase on a different device than usual, this may represent an atypical behavior. The Device ID could help us to make a correct assessment and avoid legitimate payment rejections. ## Get and send the Device ID You can add the Mercado Pago security code to your website by replacing the value \`view\` with the name of the section of your website where you want to add it. > NOTE > > Important > > In case of unavailable value for a section, leave it empty. ## Implement the Device ID in your site To use the Device ID on your web and prevent possible fraudulent purchases, follow the steps below: ### 1\. Add the security code To generate Device IDs on your website, add the following code to your Checkout page: \`\`\`html \`\`\` ### 2\. Getting the Device ID When you add the Mercado Pago security code to your site, a global JavaScript variable is automatically created with the name \`MP\_DEVICE\_SESSION\_ID\`, whose value is the Device ID. If you prefer that we assign it to another variable, indicate the name by adding the attribute \`output\`, as in the following example: \`\`\`html \`\`\` You can also \*\*create your own variable\*\* by adding an HTML tag on your site as \`id="deviceId"\` and the code will automatically assign the value device\_id. \`\`\`html \`\`\` ### 3\. Use the Device ID Once you have the Device ID, you must \*\*send it to our servers\*\* when creating a payment. To do so, simply add the following \*\*header\*\* to the request: \`\`\`http X-meli-session-id: device\_id \`\`\` > WARNING > > Attention > > Remember to replace \`device\_id\` with the name of the variable that contains your Device ID value.