Poster sessions, the AV part: e-posters, screens, and the floor

Walk through the poster area of a major Australian medical conference today and the foam-board rows are largely gone. In their place: rows of large flat-panel screens, freestanding kiosks, and the occasional touch display running a purpose-built e-poster platform. The shift has been gradual but it’s now the expected format at most GP society annuals, specialty college meetings, and multi-day research conferences. What that means for the organiser is that the poster session is no longer a printing problem. It’s an AV and exhibition-floor problem.

That distinction matters more than it sounds. A printed poster session needs wall space, velcro strips, and decent ambient lighting. A digital poster session needs screens, power runs to every station, a network that doesn’t fall over when 400 delegates open the conference app simultaneously, a content management system that reliably loads the right poster to the right screen, and a plan for what happens when a display fails 20 minutes before the session opens. The scope is different and the failure modes are different.

This piece covers the AV side of poster session planning for medical and pharma conference production. Some of it applies to any conference with a digital poster session, but medical events have specific pressures (session timing tied to CPD schedules, high presenter-to-attendee ratios, pharma sponsor activity in the same exhibition space) that shape the production approach.

From foam board to e-poster

The traditional format was simple: each presenter printed an A0 or A1 poster, pinned it to a numbered board for the designated session, stood beside it during the poster hour, and took it home afterwards. The conference organiser provided boards and pins. The AV contractor had almost no involvement beyond making sure the exhibition hall lights were on.

Digital poster sessions emerged over the past decade and arrived in force after 2020, when hybrid and online formats pushed conferences to digitise their content libraries. The drivers were practical: no printing cost for presenters, no freight, no wasted foam board, and a single digital archive that remote attendees could access after the event. Most large medical conferences in Australia now run either fully digital poster sessions or a hybrid of digital stations plus a small number of physical boards for presenters who specifically request them.

The hardware model has settled into two main configurations. The first is a screen-per-poster layout: each presenter gets their own 55-inch or 65-inch display on a floor stand, running their file locally. The second is a kiosk layout: shared touch displays running a browsable platform where attendees scroll through multiple posters and presenters are assigned a time slot at a given kiosk. Some conferences combine both, with dedicated screens for featured or award-nominated posters and shared kiosks for the general pool.

The content format has followed the hardware. Most medical conference platforms now accept PDF (single landscape page or multi-slide presentation), PowerPoint, and MP4 for video-enhanced submissions. Some platforms support embedded video clips within the poster file itself. The presenter’s guide from a typical medical society will specify a resolution (1920x1080 or 3840x2160 for 4K displays), a maximum file size, and a submission deadline that is usually two to three weeks before the event.

The hardware

The physical equipment on a digital poster floor has more components than it appears from the outside.

Screens and stands. Commercial-grade displays are necessary here, not consumer TVs. They need to be rated for continuous operation (16-hour or 24-hour duty cycle), have a brightness spec adequate for an exhibition hall with mixed lighting (typically 450 nits or more), and accept the content via the management system’s preferred input. Display size depends on viewing distance: 55-inch works for tight poster rows where attendees stand 1 to 1.5 metres away; 65-inch or 75-inch suits a more open floor plan. Portrait orientation is common because it matches the tall format of the traditional A0 poster; landscape is used where presenters supply widescreen slides.

Content management and media players. Each screen needs a media player: either a small compute device (mini-PC or SoC player) running the content management software, or a direct-connect solution where the screen has the player built in. The CMS loads the correct file to the correct screen, handles scheduling if the same screen is used across multiple sessions, and gives the technical team visibility over which displays are online and which have errored. This is the layer most likely to cause a headache the morning of load-in: mismatched file formats, a CMS that hasn’t synced overnight, a player that needs a firmware update. Build time for this into the bump-in schedule.

Floor power. An exhibition hall with 80 poster screens needs 80 power drops. Each display plus player draws roughly 100 to 200 watts; the CMS server and networking gear add to that. The venue’s available floor power (floor boxes, power from the ceiling truss, temporary cable runs) shapes the entire floor plan. It’s common for the AV team to request a venue power schedule well in advance and to build the screen layout around where circuit capacity actually exists, rather than where it looks cleanest on the floor plan. Daisy-chaining off a single circuit to reach a distant corner of the hall is the kind of shortcut that trips a breaker mid-session.

Network. The CMS needs to push files to every player, and in most configurations the screens stay connected during the session so the management interface can monitor status. If presenters are uploading last-minute file revisions (they will), those need to reach the floor quickly. A dedicated VLAN for the poster floor, wired to the switches where possible and with Wi-Fi as backup rather than primary, keeps this traffic separate from the conference app, the registration kiosks, and the session-room AV. For vision and video in the main session rooms, the network architecture is a separate conversation, but the poster floor sits on the same venue backbone and the total load needs to be planned together.

Submission and loading

The gap between what organisers plan for content delivery and what actually arrives from presenters is where most poster session problems start.

The submission window is usually set well in advance but a meaningful percentage of presenters submit in the 48 hours before the conference. Some submit on the morning of the session. The CMS has to accommodate late uploads without requiring a full re-sync of all files. The technical team needs a tested workflow for injecting a last-minute file to a specific screen without disrupting the rest of the floor.

File format compliance is the other chronic problem. The presenter guidelines say “PDF, landscape, 1920x1080.” Presenters submit portrait PDFs, PowerPoints with custom fonts that aren’t embedded, videos in a codec the player doesn’t support, and occasionally files that exceed the size limit by a factor of three. Someone needs to triage the submission queue before bump-in and flag problems to presenters early enough that they can resubmit. At a large medical conference with 200 or 300 poster submissions, this is a half-day task for a dedicated person.

Loading and verification on the day: each screen should be checked against its poster assignment before the session opens. Walking the floor with the screen manifest and verifying that the right poster is on the right screen takes 20 to 40 minutes for a floor of 80 displays, but it’s the step that catches the screen that loaded file 47 when it should have loaded file 74. Numbering is clearer when the physical screen label and the CMS assignment use the same identifier, which sounds obvious but often isn’t.

Audio on a busy floor

Poster sessions in an exhibition hall are one of the acoustically worst environments at a conference. The combination of hard floor surfaces, low or absent ceiling treatment, hundreds of simultaneous conversations, and (if pharma sponsors are present) sponsor-side presentations all happening in the same space produces a noise floor that makes it genuinely difficult to have a focused conversation at a poster station.

This matters more than it used to because some conferences now schedule brief formal presentations at poster stations, not just passive browsing. A presenter doing a five-minute walkthrough of their research while an audience of ten clusters around the screen needs to be audible. A handheld microphone and a small self-powered speaker at the station can achieve this, but it adds a channel-per-station scope that compounds quickly. Twelve poster stations with formal presentations are twelve audio channels on the floor. Managing RF coordination across that many channels in a reflection-heavy hall is a proper engineering task, not an afterthought.

For conferences that don’t run formal presentations at the poster stations, the audio challenge is different: background music or ambient audio in the exhibition space (which the sponsor activations often require) needs to be kept below a level that forces every conversation into a shout. This is partly a system design question (speaker placement and SPL targets) and partly a brief question. If the exhibition manager wants upbeat background music at 85 dB and the poster session is happening in the same zone, those two briefs are in direct conflict.

At venues like ICC Sydney, the exhibition halls are large enough that the poster session area and the sponsor activation zone can be acoustically separated with distance and speaker directionality. In smaller venues where everything is in one room, the conflict has to be resolved in the brief, not on the day.

What to brief early

The production questions that matter most for a digital poster session are the ones that have long lead times. Physical screen layout drives the power request, which drives the venue’s electrician schedule. The CMS choice drives the file format spec for presenters, which has to be locked before the submission portal opens. The network plan has to be agreed before the floor plan is finalised.

In rough order of when decisions need to be made:

Months out. Number of poster screens and the kiosk-versus-dedicated-screen model. This determines power requirements, network drops, and whether the floor plan is feasible in the nominated space. CMS platform and whether it integrates with the conference registration system (for access-controlled viewing, CPD logging tied to poster interaction, or post-event archive access).

Weeks out. File format specification locked and published to presenters. Floor plan finalised and power request submitted to the venue. Network VLAN configuration agreed with the venue IT team. Backup plan documented: what happens if a screen fails, how quickly a replacement can be swapped in, whether any screens are held as spares.

Days out. Submission queue triaged for file format issues. CMS pre-loaded with all files that are in on time. Floor plan walkthrough with the venue to confirm power and network drop locations match the screen layout.

Day of. Floor verification walk matching screen to poster assignment. System check that CMS can push an update to a single screen without affecting others. Audio check at any stations with formal presentations. Spare display staged and ready.

The poster session is not usually the glamorous part of the conference production brief, but it’s the part that the presenting researchers care about most. A researcher who has spent months on their study and travelled from Brisbane or Perth to present it deserves a screen that loads their file correctly, a station they can stand at comfortably, and a floor environment where a genuine conversation can happen. Getting the AV side right is mostly about early planning and unglamorous technical groundwork.

If you are scoping a medical conference with a digital poster session, talk to us at the brief stage. We work through the medical and pharma conference production scope, the exhibition floor AV, and the submission-to-screen workflow as a connected set of problems, not separate line items. Get in touch with the delegate count, poster count, and venue shortlist, and we’ll scope from there.