To use ESET Smart Security - comprehensive intelligent PC protection - for free, please enter your e-mail address, so we can send you a 30-day trial key. Procedure: Register using your e-mail address. One e-mail address may only be registered once. A trial key will be sent to your e-mail which allows you to download and use ESET Smart Security for 30 days. When downloading and installing ESET Smart Security use the license key which will be sent to you via e-mail. ESET products remain the best virus protection available in 2010, whether it's ESET NOD32 Antivirus or ESET Smart Security (built with the same ThreatSense engine as ESET NOD32 Antivirus). Direct comparisons, including competitive, detection and performance advantages against other antivirus solutions tell the story better than we ever could.