The Electronic Voucher Distribution System (EVD) allows you to pay your bills, recharge mobile phones, purchase in retail stores, book tickets and even buy lotteries with e-money. Sign in to EVD Web Portal. Hi, Tata Sky EVD Portal is for Tata Sky dealers. Electronic voucher distribution software - EVD Software and Voucher Management. VISIONTEK Electronic Voucher Distribution (EVD) is a simplified solution to purchase.