An Introspection-Based Memory Scraper Attack against Virtualized Point of Sale Systems

2012 ◽  
pp. 55-69 ◽  
Author(s):  
Jennia Hizver ◽  
Tzi-cker Chiueh
Keyword(s):  
Point Of Sale

Using watermark visibility measurements to select an optimized pair of spot colors for use in a binary watermark

2020 ◽  
Vol 2020 (15) ◽  
pp. 197-1-197-7
Author(s):  
Alastair Reed ◽  
Vlado Kitanovski ◽  
Kristyn Falkenstern ◽  
Marius Pedersen
Keyword(s):  
Food Packaging ◽  
Red Light ◽  
Human Observer ◽  
Viewing Distance ◽  
Point Of Sale ◽  
Complementary Color ◽  
Low Visibility ◽  
Packaging Industry ◽  
Spot Color ◽  
Selection Of

Spot colors are widely used in the food packaging industry. We wish to add a watermark signal within a spot color that is readable by a Point Of Sale (POS) barcode scanner which typically has red illumination. Some spot colors such as blue, black and green reflect very little red light and are difficult to modulate with a watermark at low visibility to a human observer. The visibility measurements that have been made with the Digimarc watermark enables the selection of a complementary color to the base color which can be detected by a POS barcode scanner but is imperceptible at normal viewing distance.

Flow-Erleben am Point of Sale

2014 ◽  
Author(s):  
Heike Riedl
Keyword(s):  
Point Of Sale

scholarly journals A Digital Currency Architecture for Privacy and Owner-Custodianship

2021 ◽  
Vol 13 (5) ◽  
pp. 130
Author(s):  
Geoffrey Goodell ◽  
Hazem Danny Al-Nakib ◽  
Paolo Tasca
Keyword(s):  
Systemic Risk ◽  
Banking System ◽  
Developed Countries ◽  
Fractional Reserve Banking ◽  
Point Of Sale ◽  
Digital Currency ◽  
Fractional Reserve ◽  
Banking Relationships ◽  
Reserve Banking ◽  
Payment Mechanisms

In recent years, electronic retail payment mechanisms, especially e-commerce and card payments at the point of sale, have increasingly replaced cash in many developed countries. As a result, societies are losing a critical public retail payment option, and retail consumers are losing important rights associated with using cash. To address this concern, we propose an approach to digital currency that would allow people without banking relationships to transact electronically and privately, including both e-commerce purchases and point-of-sale purchases that are required to be cashless. Our proposal introduces a government-backed, privately-operated digital currency infrastructure to ensure that every transaction is registered by a bank or money services business, and it relies upon non-custodial wallets backed by privacy-enhancing technology, such as blind signatures or zero-knowledge proofs, to ensure that transaction counterparties are not revealed. Our approach to digital currency can also facilitate more efficient and transparent clearing, settlement, and management of systemic risk. We argue that our system can restore and preserve the salient features of cash, including privacy, owner-custodianship, fungibility, and accessibility, while also preserving fractional reserve banking and the existing two-tiered banking system. We also show that it is possible to introduce regulation of digital currency transactions involving non-custodial wallets that unconditionally protect the privacy of end-users.

scholarly journals Using point-of-sale data to examine tobacco pricing across neighbourhoods in Scotland

2020 ◽  
pp. tobaccocontrol-2019-055484 ◽  
Author(s):  
Niamh K Shortt ◽  
Helena Tunstall ◽  
Richard Mitchell ◽  
Emma Coombes ◽  
Andy Jones ◽  
...  
Keyword(s):  
Purchase Price ◽  
Retail Outlet ◽  
Point Of Sale ◽  
Deprived Neighbourhoods ◽  
Convenience Stores ◽  
Neighbourhood Level ◽  
Outlet Density ◽  
Urban Rural ◽  
Multivariable Regression ◽  
Total Sales

ObjectivesTo assess the geographical variation in tobacco price (cigarettes and roll-your-own (RYO) tobacco) in convenience stores across Scotland and how this relates to neighbourhood income deprivation, tobacco retail outlet density and urban/rural status.MethodsTobacco price data from 124 566 shopping baskets purchased in 274 convenience stores during 1 week in April 2018 were obtained through an electronic point-of-sale system. These data were combined with neighbourhood-level measures of income deprivation, tobacco retail outlet density and urban/rural status. We examined brand price for 12 of the most popular cigarette brands and 3 RYO brands and variations in purchases by price segment; multivariable regression analysis assessed associations between area variables and tobacco price.ResultsMost stores sold tobacco in all price segments. The lowest priced subvalue brands were the most popular in all neighbourhoods but were most dominant in shops in more deprived neighbourhoods. When total sales were assessed, overall purchase price varied significantly by neighbourhood income deprivation; packets of 20 cigarettes were 50 pence (5.6%) lower and RYO 34 pence (2.7%) lower among shops in the two highest income deprivation quintiles relative to the lowest. Analysis of individual brands showed that for 3 of the 12 cigarette brands considered, average prices were 12–17 pence lower in more deprived neighbourhoods with the most popular RYO brand 15 pence lower. There was limited evidence of a relationship with tobacco retail outlet density.ConclusionAcross Scottish convenience stores, the purchase price of cigarettes and RYO was lower in more income-deprived neighbourhoods. The lower prices primarily reflect greater sales of cheap brands in these areas, rather than retailers reducing the prices of individual brands.

scholarly journals Technology Adoption and Consumer Payments: Evidence from Survey Data

2003 ◽  
Vol 2 (2) ◽  
Author(s):  
Fumiko Hayashi ◽  
Elizabeth Klee
Keyword(s):  
Technology Adoption ◽  
Survey Data ◽  
New Technologies ◽  
New Technology ◽  
The Internet ◽  
Electronic Payment ◽  
Point Of Sale ◽  
Goods And Services ◽  
Transaction Value ◽  
Debit Cards

Consumers pay for hundreds of goods and services each year, but across households and across goods, consumers do not choose to pay the same way. This paper posits that payment choices depend in part on consumers' propensity to adopt new technologies and in part on the nature of the transaction. To test this hypothesis, this paper analyzes consumer's payment instrument use at the point of sale and for bill payment. The sample includes consumers surveyed in 2001, who are primarily users of the Internet. The results indicate that consumers who use new technology or computers are more likely to use electronic forms of payment, such as debit cards and electronic bill payments. Particularly, the use of direct deposit is a significant predictor of electronic payment use. Furthermore, the results indicate that payment choice depends on the characteristics of the transaction, such as the transaction value, the physical characteristics of the point of sale, and a bill's frequency and value variability.

Sign in / Sign up

Export Citation Format

Share Document