Presence Information Data Format (PIDF). - Hiroyasu Sugano; Shingo Fujimoto; Graham Klyne; Adrian Bateman; Wayne Carr; Jon Peterson (RFC, 2004)

Adoption of the IPsec-VPN for the Ubiquitous Network. - Shingo Fujimoto; Masahiko Takenaka (SAINT, 2006)

ConnectionChain: the Secure Interworking of Blockchains. - Shingo Fujimoto; Yoshiki Higashikado; Takuma Takeuchi (IoTSMS, 2019)

Proposal of a smart contract-based security token management system. - Shingo Fujimoto; Kazumasa Omote (Blockchain, 2022)

Secure Blockchain Interworking Using Extended Smart Contract. - Shingo Fujimoto; Takuma Takeuchi; Yoshiki Higashikado (IEICE Trans. Inf. Syst., 2022)