“Transporter Phasers” (from SFA “Vitus Reflux”)

[mithril]

Or use any one of the Shuttle's Transporter Buffer's that are sitting in the Shuttle Bay in the back of the Enterprise-E.

But the Lapel Pin was clearly stated to be only useful for transporting 1-person, 1-way, & short distance as a "Emergency Get Out of Trouble" card.

He didn't go far, from the Scimitar to the Bridge of the Enterprise-E.

They were still very close to each other, so hundreds of meters at best.

Which isn't really useful in terms of long range transportation, but great for "GTFO of trouble".

the dominion demonstrated a personal transporter in DS9 "The Jemhadar", which could apparently be hidden within a bit of wrist jewelry. (when Eris beams off DS9 at the end)
so it is possible that the lapel pin transporter in Nemesis was just an early federation attempt to duplicate an aspect of the dominion's more mature transporter technology.

 

[Kamen Rider Blade]

the dominion demonstrated a personal transporter in DS9 "The Jemhadar", which could apparently be hidden within a bit of wrist jewelry. (when Eris beams off DS9 at the end)
so it is possible that the lapel pin transporter in Nemesis was just an early federation attempt to duplicate an aspect of the dominion's more mature transporter technology.

The same thing happened with kidnapping Kira Nerys to Empok Nor by Gul Dukat & his Pah-Wraith cult.

They hid a "Homing Transponder" on one of Kira's Necklaces.

I wouldn't be surprised if Eris had a similar Homing Transponder hidden in her wrist Jewelry that she knew how to activate for "Emergency Beam Out".

This could easily be a similar technology that StarFleet was copying in it's early infancy.

 

[UssGlenn]

a portable independent transporter should be no smaller than a suitcase. Ideally you lie it down flat and stand on the pad built into it. It should only have enough power stored for one transport, unless it's plugged in. Anything smaller should be a controller and homing beacon.

 

[Kamen Rider Blade]

a portable independent transporter should be no smaller than a suitcase. Ideally you lie it down flat and stand on the pad built into it. It should only have enough power stored for one transport, unless it's plugged in. Anything smaller should be a controller and homing beacon.

What size suitcase are we talking about?

 

[DonIago]

I kind of like the idea that Eris killed herself knowing that she had a new clone waiting for her.

 

[Christopher]

the dominion demonstrated a personal transporter in DS9 "The Jemhadar", which could apparently be hidden within a bit of wrist jewelry. (when Eris beams off DS9 at the end)

I always presumed the bracelet was just a signal beacon for a long-range transporter based somewhere out of sensor range -- or on a ship cloaked in a way that the station's sensors couldn't detect. After all, O'Brien said "I'm picking up a transporter signature but I can't trace it." That doesn't make it sound like the transport originated right there in Ops. It sounds like he couldn't tell where it came from. (Yes, you could bend it to mean he couldn't tell where it was going, but that's not what the phrasing implies to me.) After all, we've seen interstellar transporters used before as far back as "The Gamesters of Triskelion," "Assignment: Earth," and "That Which Survives." TNG: "Bloodlines" established that the Federation was aware of the technology but didn't use it due to its danger and impracticality. So it's plausible that the Dominion had interstellar transporters that could lock onto Eris's bracelet beacon over a great distance, perhaps even through the wormhole.