Digital Interventions
Echoes of the Ping: How Mobile Notifications Shape App Engagement
Moritz von Zahn, Arda Güler, Kevin Bauer, Oliver Hinz
Work in progress.
Presentations:
SCECR 2024 (Lisbon, Portugal); WITS 2024 (Bangkok, Thailand); Causal Data Science Meeting 2024 & 2025; Workshop on Digital Markets 2025 (Rotterdam, Netherlands); CODE@MIT 2025 (Cambridge, USA)
Durable Goods & Phygitals
De-Throning Platforms: Governing Markets with Post-Sale Control
Björn Hanneke, Arda Güler, Oliver Hinz
Work in progress.
Presentations:
SIG DITE Paper Development Workshop 2025 (Hamburg, Germany)

Economies of Phygitals: Bundling Strategies for Physical and Tokenized Digital Products
Björn Hanneke, Arda Güler
European Conference on Information Systems (ECIS) 2025 (Amman, Jordan) AISeL
Abstract
This research explores the emerging phenomenon of "Phygitals" - bundled products combining physical goods with their unique digital counterparts (tokenized digital products) in the context of bundling theory. We examine how superadditive utility created by the integration of physical and digital components affects optimal bundling strategies, considering the associated technical integration costs. Through analytical modeling, we demonstrate that producers can increase profits by introducing superadditivity in pure and mixed bundling strategies, despite integration costs. Our findings suggest that mixed bundling consistently outperforms other strategies, while the effectiveness of pure bundling versus pure components depends on the degree of superadditivity. We conceptualize different levels of Phygital functionality, ranging from basic authentication to advanced digital twin applications, and discuss real-world implementation examples. This study contributes to understanding the implications of the ontological reversal in Information Systems, specifically how producers can strategically bundle superadditive Phygitals for profit maximization.
Others
Towards Fair Value Distribution of Co-created Value in Digital Ecosystems
Cristina Mihale-Wilson, Arda Güler
European Conference on Information Systems (ECIS) 2025 (Amman, Jordan) AISeL
Abstract
Digital ecosystems (DEs) are pivotal for an intelligent digital future, fostering co-created value through collaboration among diverse stakeholders. By sharing and recombining technologies, knowledge, and services, DEs enable the creation of innovative products and offerings that surpass what isolated efforts can achieve. However, the sustainability of DEs and the value co-created in these DEs depends on fair value distribution mechanisms, as inequitable allocation of rewards can deter participation and hinder growth. Addressing this gap, our research project draws on prior literature and extant theories to design a fair mechanism for value distribution in DEs. This Research-in-Progress outlines the theoretical foundation of the proposed mechanism and identifies the next steps needed to achieve the overall goals of our project. However, the mechanism itself remains to be refined and empirically validated.

You Only Lose Once: Blockchain Gambling Platforms
Lorenz Baum, Arda Güler, Björn Hanneke
International Conference on Wirtschaftsinformatik (WI) 2025 (Münster, Germany)
Abstract
Online gambling platforms exhibit increasing revenues, exacerbating societal issues while evading regulatory oversight. The emergence of blockchain gambling platforms aggravates these issues, luring users with the promise of transparent and verifiable gambling rules. To provide insights for regulators and user protection measures, we strive to understand how users interact with these emerging platforms. We analyze over 22,800 rounds of YOLO, a gambling platform implemented as a smart contract. In our sample, 3,306 unique users lost a total volume of USD 5.1 million. Generalized linear mixed model estimation results reveal the effects of users’ cognitive biases while engaging in on-chain gambling, demonstrating the substantial risks of gambling smart contracts in exploiting users with gambling inclinations, especially given the lack of user protection measures. Enforcing user protection remains challenging for decentralized gambling smart contracts, which might exacerbate the lack of oversight, user protection, and law enforcement on traditional online gambling platforms.