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In recent years, topological insulator materials have been attractive to many scientists because of their gapless conductive surface states that are protected against perturbations. Bi₄I₄ is a quasi-one-dimensional van der Waals material, and its β-phase is predicted to be a topological insulator, thus offering a new platform for exploring the physics of topological phases. Here we report fabrication and measurement of Bi₄I₄ devices. Its electrical transport properties are investigated as a function of channel length, electrode materials, mobility and magnetic field.