Scientific Telephone Samples (STS) is a leading provider of quality sampling services for the marketing research and academic communities. We offer a comprehensive array of sampling options including RDD landline, RDD wireless, Enhanced-Wireless™, listed/targeted, business-to-business, voter sample, phone appends and data enhancement. Reduce your wireless data collection costs with Enhanced-Wireless™, an extremely productive wireless sample based upon a very large database of 125 million known wireless phones, complete with name/address. Using Enhanced-Wireless™, wireless individuals can be targeted by age, income, gender, ethnicity, radius, block group, census tract, polygon, etc. We offer expert sampling consultation and demographic analysis, and will help you achieve a representative and productive sample. We are known for our excellent customer service and our ability to create effective sampling solutions for the most complicated research studies. Established 1988.